...a frequency of 24 kilohertz.24 千赫的频率They sat aside 100 channels, each 200 kilohertz wide.他们在旁边坐了100种渠道, 各200千赫宽.Twisted - pair conductors are sufficient if frequencies of interest are below a few hundred kilohertz.如果信...
They sat aside 100 channels, each 200 kilohertz wide.他们在旁边坐了100种渠道, 各200千赫宽.Twisted - pair conductors are sufficient if frequencies of interest are below a few hundred kilohertz.如果信号频率低于几百kHz,则使用双绞线就已足够....
因此,必须选择适当的馏分油,用调合法使它满足市场的要求.And optimum selection of crude types to meet market requirements by blending is necessary.C5馏分油主要来源于石油烃高温裂解制乙烯过程的副产品,随着乙烯工业的发展,乙烯废弃的C5馏分量逐年增大.另一方面,民用燃料需要量颇为可观.C 5 distillate of ethylene access...
We remove these rear controls and install them as canard controls.我们把尾部控制改为鸭式控制.This canard was started by William Herndon.这一谣言最初出自威廉·赫恩登之口.The charge that Harding was a political stooge may be a canard.关于哈丁是个政治走狗的指控可能是个...