| 释义 |
1 [电]?线路电压降 ...中 VS=VO+VF求解得开关管基极驱动绕组 NP2 的计算:因 Tr1 的 VEB 条件:以上各绕组匝数已经决定,输出侧因 线路电压降 ( line drop )的发生,实际的圈数有必要比以上值稍多. 2 ?线路压降 ...line drop；load moment；local relay box；control circuit；remote control [gap=134]关键词：消火栓泵；安全电压；线路压降；负荷矩；现场继电器箱；控制电路；远程控制 ... 3 ?掉牌 ... line driver 线路激励器,线路驱动器 line drop 线路电压降,掉牌 line edge blur 导线边缘模糊 ...
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Drop me a line when you get there. - 2
Drop us a line, it's always great to hear from you. - 3
I've been out of touch with most of my old friends, only one or two still drop me a line occasionally. 我已经和我的大多数老朋友失去了联系，只有一两个还偶尔给我写信。
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