simple harmonic periodic change 简谐周期变化
year periodic change 年周期性变化
coordinate periodic change 协同周期性变化
periodic change of FHR 周期性胎心率
Change Periodic Transfer 改变定期转帐
Change plan periodic transfer 修改计划定期转帐
Periodic change imposed on a controlled variable or a function by a controller.
通过控制器控制某一变量或函数进行周期性变化。
A periodic change in the distribution of pressure between the North Pole and a circle at about 55degree.
在北极点与大约55度N纬圈之间气压分布的周期性变化。
The periodic change of runoff and erosion occurred after the tilling operation and the cutting of grass.
表现为随植被经营利用而出现阶段性的变化,牛鞭草的刈割对退耕地地表径流和土壤侵蚀影响较大。
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