The minimum polished rod load occurs near the top of the stroke with the start of the downstroke.
最小光杆负荷发生在下行冲程开始时的冲程顶部附近。
The difference in the peak load on the upstroke and the minimum load on the downstroke of a polished rod.
光杆上行冲程时的最大负载与下行冲程时的最小负载之差。
Phase IV is the inspiratory downstroke. This is the beginning of the inhalation and the carbon dioxide curve falls steeply to zero.
阶段IV是吸气下降支。这是吸入的开始及二氧化碳曲线急速降为零。
And the static and dynamic leakage of the pump should be approximately calculated according to the annulus at the end of the plunger's downstroke.
应近似地按柱塞位于下止点时的环隙计算抽油泵的环隙静、动态漏失量。
The flow fields are different for the three phase motion patterns and there are two types of leading-edge vortex motion at an earlier stage of upstroke or downstroke.
三种相位下的涡流场形态各有不同，上挥（下拍）初期前缘涡的运动主要存在两种形态。
The flow fields are different for the three phase motion patterns and there are two types of leading-edge vortex motion at an earlier stage of upstroke or downstroke.
三种相位下的涡流场形态各有不同，上挥（下拍）初期前缘涡的运动主要存在两种形态。
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