English translation for "下差"

allowance below nominal size

Example Sentences:

	1.	Factors that affect two - phase flow pressure drop are discussed in details at first . polynomial is used to fit the relation between property of differential pressure signal and lockhart - martinelli parameter x . based on the relation , a dual - parameter identification scheme using only differential pressure signal is given 讨论了影响两相流压降的因素，用多项式拟合的方法研究了不同流型下差压信号方差与lockhart ? martinelli参数x之间的函数关系。
	2.	At present , differential protection is often used as the main protection for traction transformers . however , the existing of certain factors , such as magnetizing inrush , over - excitation , ct saturation and mismatching of ct ratio , will result in that it is hard to distinguish state current and fault current , and differential protection misoperation or maloperation , then secure operation of electric railways system will be threatened 目前，牵引变压器通常采用差动保护作为主保护，但是在某些因数的影响下差动保护并不能准确的区分牵引变压器内部故障或非内部故障，如故障电流与变压器处于励磁涌流、过励磁， ct饱和及ct变比不匹配等情况下的状态电流就很难准确的区分，可能造成保护误动或拒动，从而危及整个铁道电气化系统的安全运行。

Similar Words：

"下叉纲" English translation, "下叉连杆" English translation, "下茶为礼" English translation, "下查埠" English translation, "下察苏切伊" English translation, "下差别阈" English translation, "下场" English translation, "下场不好" English translation, "下场门" English translation, "下场区" English translation