The trough is the maximum negative amplitude or downward deflection of the wave.
波谷是子波最大负振幅或向下的偏离。
For any C. G. position, an increase in trim speed from any initial value to a larger one requires a downward deflection of the elevator.
对于任意一个重心位置，平衡速度由它的初始值变化到较大的值时要求升降舵向下偏转。
In recent years, remedy of main girder's downward deflection of OTC by pre-stress method has found wide spread application. This is also the common practice iu Wu Hun district.
用预应力法修理桥式起重机主梁下挠，近年来得到了广泛的应用，武汉地区应用亦较为普遍。
In recent years, remedy of main girder's downward deflection of OTC by pre-stress method has found wide spread application. This is also the common practice iu Wu Hun district.
用预应力法修理桥式起重机主梁下挠，近年来得到了广泛的应用，武汉地区应用亦较为普遍。
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