我家的笨笨蛋
1)turn (sth./sb.)over 使(某物/某人)翻轉(zhuǎn)或翻身2)營(yíng)業(yè)額達(dá)…3)turn sb. over to sb. 把某人交給(負(fù)責(zé)人,警方等)
戊己庚辛
G為靈敏電流計(jì)是供學(xué)生實(shí)驗(yàn)或?qū)嶒?yàn)室檢查直流電路中微弱的電流或 微小電壓用的,它是一種高靈敏度的磁電式儀表,可以測(cè)量10^-7~10^-12A的微小電流.如用作電橋測(cè)量、溫差電偶、電磁感應(yīng)及光電效應(yīng)等.實(shí)驗(yàn)中的檢流計(jì).如圖是電表外形結(jié)構(gòu).表頭的結(jié)構(gòu)同直流安培表、直流伏特表相 同.靈敏電流計(jì)的量程電流[1](滿刻度電流值)為30微安.儀表使用前 應(yīng)先檢查指針是否對(duì)準(zhǔn)零點(diǎn),如有偏差,應(yīng)用零點(diǎn)調(diào)節(jié)器調(diào)零.用靈敏電流計(jì)檢查電路中微弱的電流時(shí),可直接串聯(lián)在待測(cè)電路 中,從電流計(jì)指針是否偏轉(zhuǎn)來(lái)確定電路中有無(wú)電流通過(guò).如果指針向 右偏轉(zhuǎn),則表明電路有電流從“+”接線柱到“-”接線柱;如果指 針向左偏轉(zhuǎn),則表明電流方向由“-”接線柱流向“+”接線柱.用靈敏電流計(jì)檢查電路兩點(diǎn)間是否存在電壓,可直接并聯(lián)在電路 中待測(cè)的兩點(diǎn),根據(jù)指針偏轉(zhuǎn)確定兩點(diǎn)間是否存在電壓,根據(jù)偏轉(zhuǎn)的 方向可確定兩點(diǎn)間電壓的方向.無(wú)論用作檢測(cè)電流或微小電壓,此電流計(jì)都不能精確地測(cè)量電流 強(qiáng)度或兩點(diǎn)間的電壓,而只能作為檢流計(jì)或示零儀表用.任何時(shí)候都不應(yīng)使通過(guò)電流計(jì)的電流強(qiáng)度超過(guò)滿刻度電流值,更 不要將電流計(jì)誤作安培表,或伏特表接入電路.儀表搬運(yùn)時(shí)應(yīng)使兩接線柱短路.當(dāng)靈敏電流計(jì)的外接電阻不同時(shí),靈敏電流計(jì)內(nèi)部的線圈其阻尼特性不同,當(dāng)外接電阻較小時(shí),線圈則緩慢地趨向平衡位置,稱為過(guò)阻尼狀態(tài);當(dāng)外接電阻較大時(shí),線圈做減幅周期振動(dòng),稱為欠阻尼狀態(tài);在這兩種狀態(tài)之間存在一種臨界狀態(tài),即線圈以最快的速度達(dá)到平衡位置,而不發(fā)生振動(dòng),稱為臨界阻尼狀態(tài),此時(shí)外接電阻叫做臨界電阻.在實(shí)驗(yàn)中,通過(guò)電流計(jì)的電流與光標(biāo)的偏轉(zhuǎn)格數(shù)是成正比的,比例系數(shù)C稱之為電流計(jì)常數(shù),且電流計(jì)有一定的內(nèi)阻.
艱難之旅
繞組【匝數(shù)】的意思,23T就是23匝,英文縮寫(xiě)(首位字母)。turns. 轉(zhuǎn)彎;匝數(shù);圈數(shù)(turn的復(fù)數(shù)形式)
尛嘴亂吃
turn over Verb place into the hands or custody of; "hand me the spoon, please"; "Turn the files over to me, please"; "He turned over the prisoner to his lawyers" (synonym) pass, hand, reach, pass on, give (hypernym) transfer (hyponym) give cause to overturn from an upright or normal position; "The cat knocked over the flower vase"; "the clumsy customer turned over the vase"; "he tumped over his beer" (synonym) overturn, tip over, upset, knock over, bowl over, tump over (hypernym) move, displace (cause) overturn, tip over, tump over (verb-group) overturn, tip over, tump over (derivation) upset, overturn, turnover move by turning over or rotating; "The child rolled down the hill"; "turn over on your left side" (synonym) roll (hypernym) turn (hyponym) rim (verb-group) roll, revolve turn up, loosen, or remove earth; "Dig we must"; "turn over the soil for aeration" (synonym) dig, delve, cut into (hypernym) remove, take, take away, withdraw (hyponym) furrow, rut, groove do business worth a certain amount of money; "The company turns over ten million dollars a year" (hypernym) transact (derivation) dollar volume, turnover (classification) commerce, commercialism, mercantilism cause to move around a center so as to show another side of; "turn a page of a book" (synonym) turn (hypernym) move, displace (hyponym) evert turn from an upright or normal position; "The big vase overturned"; "The canoe tumped over" (synonym) overturn, tip over, tump over (hypernym) turn (hyponym) capsize, turtle, turn turtle (verb-group) overturn, tip over, upset, knock over, bowl over, tump over (derivation) upset, overturn, turnover turn upside down, or throw so as to reverse; "flip over the pork chop"; "turn over the pancakes" (synonym) flip, flip over (hypernym) turn (derivation) turnover think about carefully; weigh; "They considered the possibility of a strike"; "Turn the proposal over in your mind" (synonym) consider, debate, moot, deliberate (hypernym) hash out, discuss, talk over (hyponym) see (verb-group) study, consider 簡(jiǎn)明英漢詞典 turn over v.打翻, 營(yíng)業(yè)額達(dá)到, 周轉(zhuǎn), 移交給, 反復(fù)考慮, 翻身, 折騰, 翻閱 現(xiàn)代英漢綜合大辭典 turn [tE:n]vt.轉(zhuǎn), 轉(zhuǎn)動(dòng), 旋轉(zhuǎn)turn a wheel轉(zhuǎn)動(dòng)輪子The wheel of history cannot be turned back.歷史的車輪不能倒轉(zhuǎn)。She turned the key in the lock.她用鑰匙開(kāi)鎖。翻, 翻轉(zhuǎn), 倒轉(zhuǎn), 倒置, 翻新(衣服等)turn a page翻一頁(yè)turn a phonograph record把唱片翻過(guò)來(lái)He turned a somersault.他翻了個(gè)筋頭。I had my overcoat turned.我把大衣翻個(gè)面。使彎曲, 扭曲; 對(duì)折(書(shū)頁(yè)等); 使(刀口[刃])卷起, 使變鈍turn a lead pipe彎鉛管He turned the edge of the knife.他使刀口卷刃[變鈍]。He turned his ankle.他扭傷腳踝。使朝向, 轉(zhuǎn)向, 指向, 轉(zhuǎn)移; 勸說(shuō); 集中turn one's steps homewards轉(zhuǎn)身回家turn one's head away把頭掉開(kāi)T-it more to the right.把它向右邊轉(zhuǎn)動(dòng)一下。T-your face this way.請(qǐng)把臉轉(zhuǎn)到這邊。把(注意力等)轉(zhuǎn)向; 把...用于; 把...對(duì)準(zhǔn)turn one's hand to writing致力于 寫(xiě)作turn one's guns on the enemy把槍口對(duì)準(zhǔn)敵人T-your attention to business.請(qǐng)把注意力集中在事務(wù)上。She turned her thoughts toward home.她轉(zhuǎn)念思家。擋開(kāi), 使偏斜turn a punch擋住一拳This metal is thick enough to turn a bullet.此金屬厚得可以擋住子彈。使變成; 改變; 使變質(zhì)[變酸]The hot weather has turned the milk.天熱使牛奶變質(zhì)了。The cold weather turned leaves red.寒冷天氣使樹(shù)葉變紅。驅(qū)使, 攆, 驅(qū)散, 擊退turn sb. out of the door把某人趕出門turn the enemy's attack擊退敵人的進(jìn)攻He was turned out of the hall for making too much noise.他因過(guò)于喧鬧而被趕出會(huì)場(chǎng)。使傾倒, 使顛倒turn the contents of one's bag out to the table把袋里的東西倒在桌上兌換; 翻譯, 改寫(xiě)turn coins into paper money把硬幣換成紙幣Can you turn this article into Chinese?你能把這篇文章譯成漢語(yǔ)嗎?(時(shí)刻)超過(guò), 逾He has turned fifty.他已經(jīng)五十歲了。It has just turned half past two.現(xiàn)在剛過(guò)兩點(diǎn)半。對(duì)...仇視, 使作對(duì), 使回?fù)魌urn a son against his father使兒子仇視父親繞過(guò)turn a street corner沿街角拐彎攪亂(心智), 使(心神)不安, 使沖昏(頭腦)Too much praise turns his head.過(guò)多的贊揚(yáng)沖昏了他的頭腦。使作嘔, 使惡心The mere sight of food turned his stomach.一見(jiàn)食物, 他就想嘔吐。The rotten fish turned my stomach.臭魚(yú)使我惡心。使遭受, 使受到; 使用, 利用turn money to good use使金錢得到很好利用。He can turn his hand to almost everything.他幾乎什么都(學(xué)得)會(huì)。使具有優(yōu)美形式a well turned phrase漂亮的詞句He can turn pretty compliments.他會(huì)說(shuō)動(dòng)聽(tīng)的恭維話。使(貨幣、貨物)流通, (存貨)出清; 賺, 掙turn a penny賺一些錢a turn profit賺錢, 牟利【刷】倒植, 倒排 ⑵⑽【機(jī)】車(削), 旋, 為...車外圓, 被車[旋]; 使成圓形turn a machine part車機(jī)器部件Let's get the lathe to turn the new piston.咱們用車床車[加工]新的活塞吧。 詞性變化turn [tE:n]vi.旋轉(zhuǎn); 轉(zhuǎn)動(dòng), 環(huán)繞The wheels were turning slowly.輪子在緩慢地轉(zhuǎn)動(dòng)著。The earth turns round the sun.地球繞太陽(yáng)旋轉(zhuǎn)。翻身, 轉(zhuǎn)彎, 翻轉(zhuǎn)All night long he turned and tossed in bed.整整一夜他在床上翻來(lái)覆去地睡不著。Now please turn round.現(xiàn)在請(qǐng)轉(zhuǎn)過(guò)身來(lái)。The road turns sharp right.路向右急轉(zhuǎn)。求教, 求助We often turn to this handbook for information on transistors.我們常從這本手冊(cè)查閱有關(guān)晶體管的資料。翻到, 查閱, 轉(zhuǎn)到Please turn to page twelve.請(qǐng)翻到十二頁(yè)。The conversation inevitably turned to the changes that had taken place in the village.話題不可避免地轉(zhuǎn)到談村子里發(fā)生的變化。變成, 變得; 變質(zhì), 變酸; 改變信仰; 變色The milk has turned.牛奶變質(zhì)了。Maple leaves have turned crimson .楓葉已經(jīng)紅了。The weather suddenly turned cold.天氣突然冷了起來(lái)。This afternoon will be cloudy, turning clear.今天下午陰轉(zhuǎn)晴。He later turned Moslem.他后來(lái)改信了伊斯蘭教。At a low temperature, water turns into ice.水在低溫時(shí)就結(jié)成冰。轉(zhuǎn)而反對(duì)(against); 發(fā)怒, 攻擊(on)Why did they suddenly turn against you?他們?yōu)槭裁赐蝗晦D(zhuǎn)而反對(duì)你?暈眩; 作嘔My stomach turned at the sight of blood.我一看見(jiàn)血就想吐。My head is turning.我頭暈。變鈍The knife's edge has turned.刀變鈍了。依賴, 取決于The success of the meeting turns on the weather.這次集會(huì)是否成功取決于天氣狀況?!緳C(jī)】被旋, 被車, 在車床上加工a metal that turns easily容易車的金屬(商品)轉(zhuǎn)手, 易手n.旋轉(zhuǎn); 轉(zhuǎn)身; 翻轉(zhuǎn); 轉(zhuǎn)向, 轉(zhuǎn)彎;【軍】迂回轉(zhuǎn)角, 轉(zhuǎn)彎處; 曲折處變化; 轉(zhuǎn)機(jī); 轉(zhuǎn)折點(diǎn)形狀, 樣子; 傾向; 癖性; 氣質(zhì); 特殊才能一個(gè)回合, 走一圈; 散步; 行為, 舉動(dòng)[英]雜技演員輪流, 輪班一卷, 一圈; 線匝, 匝數(shù); 圈數(shù)[pl. ]月經(jīng)【音】回音;【刷】倒頭鉛字[美俚](雜技、廣播等的)一個(gè)節(jié)目(對(duì)原作的)改動(dòng), 改寫(xiě)(語(yǔ)言等的)特色; 措詞(特征)[口]驚嚇一筆證券交易; 一筆證券交易的獲利【機(jī)】車床; 有旋轉(zhuǎn)把柄的櫥門閂[古]計(jì)謀[策]; 必[需]要make a turn拐[轉(zhuǎn)]彎; 轉(zhuǎn)一圈take two turns擰[轉(zhuǎn)]兩圈a coil of 500 turns五百匝的線圈on the afternoon turn值下午班Matters have taken a bad turn.事情惡化。I don't like the turn of the sentence.我可不喜歡這句話的措詞。It gave me quite a turn.可把我嚇了一跳。It is your turn now.現(xiàn)在輪到你了。No one is allowed to get his ticket out of turn.任何人都不準(zhǔn)不按次序買票。
queenielove多兒
T表示特斯拉的意思,特斯拉英文為tesla(字首小寫(xiě)),符號(hào)表示為T,是磁通量密度或磁感應(yīng)強(qiáng)度的國(guó)際單位制導(dǎo)出單位。在1960年巴黎召開(kāi)的國(guó)際計(jì)量大會(huì)上,此單位被命名以紀(jì)念在電磁學(xué)領(lǐng)域做出重要貢獻(xiàn)的美籍塞爾維亞發(fā)明家、電子工程師尼古拉·特斯拉。特斯拉用以衡量特定區(qū)域通過(guò)的總磁通量,因而,減小面積便會(huì)增加磁通量密度。 1 T = 1Wb/m2=1N/(A.s2)=1Kg/(A.s2)
晴朗的海01
小型變壓器的簡(jiǎn)易計(jì)算: 1,求每伏匝數(shù) 每伏匝數(shù)=55/鐵心截面 例如,鐵心截面=3.5╳1.6=5.6平方厘米 故,每伏匝數(shù)=55/5.6=9.8匝 2,求線圈匝數(shù) 初級(jí)線圈 n1=220╳9.8=2156匝 次級(jí)線圈 n2=8╳9.8╳1.05=82.32 可取為82匝 次級(jí)線圈匝數(shù)計(jì)算中的1.05是考慮有負(fù)荷時(shí)的壓降 3,求導(dǎo)線直徑 要求輸出8伏的電流是多少安?這里我假定為2安。 變壓器的輸出容量=8╳2=16伏安 變壓器的輸入容量=變壓器的輸出容量/0.8=20伏安 初級(jí)線圈電流I1=20/220=0.09安 導(dǎo)線直徑 d=0.8√I 初級(jí)線圈導(dǎo)線直徑 d1=0.8√I1=0.8√0.09=0.24毫米 次級(jí)線圈導(dǎo)線直徑 d2=0.8√I2=0.8√2=1.13毫米橫截面積(CM):S=1.25×根號(hào)P 經(jīng)橋式整流電容濾波后的電壓是原變壓器次級(jí)電壓的1.4倍。
kellycai4141
電路圖中G代表靈敏電流計(jì)。
靈敏電流計(jì)是供學(xué)生實(shí)驗(yàn)或?qū)嶒?yàn)室檢查直流電路中微弱的電流或微小電壓用的,它是一種高靈敏度的磁電式儀表,可以測(cè)量10^-7~10^-12A的微小電流。如用作電橋測(cè)量、溫差電偶、電磁感應(yīng)及光電效應(yīng)等。
擴(kuò)展資料:
當(dāng)線圈中通有電流IS時(shí),由于氣隙磁場(chǎng)的作用而產(chǎn)生的電磁力矩推動(dòng)線圈偏轉(zhuǎn)。線圈在偏轉(zhuǎn)過(guò)程中,支承它的張絲發(fā)生扭曲變形,同時(shí)產(chǎn)生與電磁力矩方向相反的彈性回復(fù)力矩,該力矩與線圈偏轉(zhuǎn)角成正比。
當(dāng)這兩個(gè)力矩大小相等時(shí),線圈不再偏轉(zhuǎn)而處于平衡位置a0,此時(shí)有:NSBIg=Dab,式中N為線圈的匝數(shù),S為線圈的面積,B為線圈所在氣隙處的磁感應(yīng)強(qiáng)度,D為張絲的扭轉(zhuǎn)系數(shù),這幾個(gè)量均為靈敏電流計(jì)的固有參數(shù)。
其中,a0=NSBIs/D=Si*Is。其中,NSB*Si/D定義為電流計(jì)的電流靈敏度,其倒數(shù)1/Si稱為電流計(jì)常量。
參考資料來(lái)源:百度百科-靈敏電流計(jì)
優(yōu)質(zhì)英語(yǔ)培訓(xùn)問(wèn)答知識(shí)庫(kù)