英語(yǔ)翻譯專(zhuān)業(yè)證書(shū)-在線瀏覽
2024-10-17 19:04本頁(yè)面
【正文】 ectrons through an 。2)A threephase circuit, as it was pointed out above, is merely a bination of three singlephase threephase circuit, as pointed out above, is merely a bination of three singlephase ，三相電路只不過(guò)是三個(gè)單相電路的組合。1）The capacity of individual generators is larger and larger so that the increasing demand of electric power is capacity of individual generators is larger and larger to satisfy the increasing demand of electric ，目的就是滿足不斷增長(zhǎng)的用電需求。1)If it is possible, the openloop control approach should be used in this possible, the openloop control approach should be used in this ，這個(gè)系統(tǒng)應(yīng)該使用開(kāi)環(huán)控制方法。3)The device includes an instrument transformation and a relay system which has two circuits in device includes an instrument transformation and arelay system with two circuits in 。2)The reluctance motor operates synchronously at a speed which is determined by the supply frequency and the number of poles for which the stator is ，該速率是由電源頻率和定子繞制的級(jí)數(shù)決定的。1)All radiant energies have wavelike characteristics, which are analogous to those of waves moving through radiant energies have wavelike characteristics analogous to those of waves moving through ，與水中移動(dòng)的波的特征相似。 the system expands and higher voltage levels bee necessary for transmission, the older transmission lines are often relegated to subtransmission ，舊的輸電線路往往被移交給中壓輸電功能。 definite capability can be specified for a line of a given voltage, however, because capability is dependent on the thermal limits of the conductor, allowable voltage drop, reliability, and requirements for maintaining synchronism between the machines of the system, which is known as ，無(wú)法為給定電壓等級(jí)的線路指定確切的容量，這是因?yàn)槿萘咳Q于導(dǎo)線的發(fā)熱極限、允許的電壓降落、可靠性和維持系統(tǒng)中的發(fā)電機(jī)同步的要求（這被認(rèn)為是穩(wěn)定性）?；颍弘娙荽嬖谟趯?dǎo)體之間，等于導(dǎo)體之間單位電壓對(duì)應(yīng)的電量。 of the three phases can be restored by exchanging the positions of the conductors at regular intervals along the line so that each conductor occupies the original position of every other conductor over an equal distance, as shown in ，沿線路方向每隔一定間隔就交換導(dǎo)線位置，使每根導(dǎo)線都能占據(jù)具有相同輸電距離的其他各導(dǎo)線的初始位置，以重建三相平衡。這樣的裝置稱(chēng)之為電容器，其儲(chǔ)存電能的能力稱(chēng)為電容。 industrial customers are supplied by primary feeders at this voltage level from the primary system, which also supplies the distribution transformers providing secondary voltages over singlephase threewire circuits for residential and mercial customers at 120 V/240 。 illustrated in , the aggregated load represented at a transmission substation(bus A)usually includes, in addition to the connected load devices, the effects of substation stepdown transformers…，在輸電變電站（母線A）所給出的集合負(fù)荷，除了所連接的負(fù)荷設(shè)備以外，通常還包括變電站降壓變壓器的影響……。 loads absorb electric energy from the power system and converts it into energy of other forms, which may be heat energy to heat water or to melt irons, or mechanical energy to drive a machine, ，并將其轉(zhuǎn)換為其他形式的能量，可能是燒水或溶化鋼鐵的熱能，或者是驅(qū)動(dòng)機(jī)器的機(jī)械能等。 synchronous machine as an AC generator driven by aturbine is the device which converts mechanical energy to electrical energy, in powers ranging up to ，同步電機(jī)是將機(jī)械能轉(zhuǎn)化為電能的設(shè)備，其功率范圍高達(dá)1500MW。 instance, in the United States, water power accounts for less tha
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