英 [ˈdaʊnˌstrəʊk] 美 [ˈdaʊnˌstroʊk]
n. 下行程；下行冲程；向下的一笔
a stroke normally made in a downward direction
重打
... downstreamfilm气流下流外延层 downstroke下冲程 下行程 downstrokehydraulicpress下冲式水压机 ...
... downstream向下游 downstroke下行冲程 downstroke下行行程 ...
... 下游加键器 downstream keyer 重打 downstroke 当机时间，停机时间 downtime ...
... downpriceclause减价契约条款 downstroke下行行程 downstroke=downstroke下行行程 ...
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。
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。
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。