1·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。
2·Sporting a powerful but eccentric downstroke, Guldahl won three major championships in as many years.
动作古怪地挥出了有力一杆后，古德赫取得了三大重要赛事的连胜，而且好几年都赢了大满贯。
3·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。
4·The lines that formed the letters started again each time on the upstroke, the downstroke, and before the curves and loops.
那些组成字母的一行行字每次开始写时都朝上挑，朝下冲的，而且还是在那些曲线和圈圈之前。
5·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。
6·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。
7·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。
8·Because the filters move with the plunger, the sweeping action of the fluid on the downstroke cleans the filters and keeps sand suspended within the production fluid.
因为滤渣器与泵塞是连轴一起移动的，在下冲程期间进入的液体可以起到冲刷作用，利用液体的冲刷来清理滤渣器，使砂粒悬浮于产出液中。
9·That's because body text gets to break the consistency rule, especially if your heading fonts are serif fonts (serif fonts have the little squiggles, like at the end of the downstroke of the "y").
这是因为主体文本打破了一致性原则，尤其是当标题字体是serif字体的时候(serif字体有一些花体，比如字母“y”的最后一笔的末尾)。