Taking the rod string as the object of study, a method of computing pumping stroke and speed of walking beam pumping units for slant straight wells is also presented.

以抽油杆柱为研究对象，论述了斜直井游梁式抽油机冲程和冲次的计算方法。

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On the basis of an analysis of the stroke composition and the mutual relationship between strokes, a string code is used to describe the structural features of Chinese characters.

在对汉字的笔画构成以及笔画之间的相互关系进行分析的基础上，采用链码来描述汉字的结构特点。

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During oil recovery by rod pump, owing to the elastic stretching and shrinking of the tubing string, the stroke loss of the subsurface pump reaches 10%.

在有杆泵抽油过程中，因油管弹性伸缩，抽油泵冲程损失达10%以上。

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Why not own a creature you can stroke and cuddle and tease with a piece of string?

BBC: Exotic pets: Why do Americans keep dangerous animals?

As he leaves the playing field for the last time, we will remember him for a magnificent string of results in 2004 and 2005, plus his signature stroke: that exquisite cover-drive.

BBC: Reaction to Vaughan's retirement