突然收缩 meaning in English
sudden contraction
Examples
- The hukou waterfall on the huanghe river west of jixian county , shanxi , is formed when the river flows to the hukou mountains on the shanxi - shaanxi border and its 250 - meter - wide bed , sandwiched between the canyons on its banks , abruptly narrows into a trough 50 meters wide and 30 meters deep and falls down into a big stone - strewn pool
当流至壶口时，宽约400多米的河床，突然收缩到四五十米，形成特大型马蹄状瀑布，河水似从一巨型壶口泻下。主瀑布宽40米，落差近50米。 - After the introduction of the innovations and the improvements of foreign hydraulic shock absorbers , the profound cushion mechanics study is done aiming to the shock absorbers chosen for the thesis ; the cushion process of hydraulic shock absorbers can be divided into several stages , which include local pressure loss caused by across sectional area shrinking , sharp edge throttling and aperture throttling
在对国外新型液压缓冲器的研究基础上，针对本课题所选液压缓冲器的结构特点，提出了分阶段建立机理数学模型方法。将液压缓冲器缓冲过程分为：由于流道断面突然收缩引起的局部压力损失阶段，缓冲柱塞的边缘和缓冲孔的边缘形成锐缘节流阶段，当缓冲柱塞进入缓冲孔中形成的缝隙节流阶段等三过程。