The strain test in the agricultural machinery field was used to probe the stress variation inside a frame in order to examine the strength of the plastics greenhouse frames.
为验证大棚骨架的强度，用农机测试中的应变测量法，来探索其内部应力的变化情况。
On the strength equivalent hypothesis, the theory relation between stress-damage coupling effect and variation of crustal gravity field.
利用应变等效性假设，推导了地壳体的应力-损伤耦合效应与地表重力变化之间的理论关系。
The variation of rotation Angle of director of classic nematic liquid crystals with field strength and position is calculated.
计算了典型向列相液晶的指向矢偏转角随场强和位置的变化。
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