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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Hiking groups, a group of people who are enthusiastic about walking, running or hiking, are often seen walking at full speed along the street.

暴走团是一群热衷于走路、跑步、远足的人，人们常常看到他们沿着街道全速行走。

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The other factors were speed of rising from a chair and walking pace.

另一因素是从椅子上升和步行速度的速度。

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Their assumptions of walking speed can vary from 2.5 miles per hours to 3.1 miles per hour, and their treatments of hills varies, too.

WSJ: Timing an Urban Stroll Isn't a Walk in the Park

The author of a Swiss study on climate change and health, Dr Nino Kunzli of the Institute for Social and Preventive Medicine in Basle, said the greatest health benefits would come from policies covering technology, urban planning, traffic speed and safety, and the promotion of walking, cycling and public transport.

BBC: Tackling climate 'helps health now'