mains-frequency 中文意思是什麼
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Mains frequency coreless, induction iron - melting furnace and iron - holding furnace
工頻無心感應熔鐵 -
Mains frequency coreless, induction furnace for melting copper
工頻無心感應熔銅爐 -
Mains frequency coreless, induction furnace for melting aluminium
工頻無心感應熔鋁爐 -
Distribution automation using distribution line carrier systems - part 3 : mains signalling requirements - section 1 : frequency bands and output levels
採用配電線載波的配電自動化第3部分:配電線載波信號傳輸要求第1篇:頻帶和輸出電平 -
The cathode bypass should be " effective " well below the " mains " frequency ", which is usually the case anyway
陰極旁路電容的截至頻率應該遠低於市電頻率，這點應該在任何情況下都需要注意的。 -
In electronics, undesirable low frequency currents interfering with a desired signal, and usually caused by a poorly screened alternating mains supply
在電子學領域，一種不希望發生的低頻電流，它干擾所要求的信號。通常這種現象是由於交流供電線路屏蔽不良引起的。 -
Signalling on low - voltage electrical installations in the frequency range 3 khz to 148. 5 khz - immunity requirements for mains communications equipment and systems operating in the range of frequencies 3 khz to 95 khz and intended for use by electricity suppliers and distributors
頻率范圍由3khz至148 . 5khz的低壓電氣設備的信號傳輸.在3khz至95khz頻率范圍內操作和由電力操作的主要通訊設備和系統的抗干擾電源和配電器的要求 -
Signalling on low - voltage electrical installations in the frequency range 3 khz to 148, 5 khz - part 2 - 3 : immunity requirements for mains communications equipment and systems operating in the range of frequencies 3 khz to 95 khz and intended for use by electricity suppliers and distributors
頻率范圍由3khz至148 . 5khz的低壓電氣設備的信號傳輸.第2 - 3部分:電源和配電器使用的工作頻率為3khz至95khz的主要通訊設備和系統的抗擾度要求
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