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1)  sudden contraction
突缩
2)  sudden contraction
突缩管
1.
The local resistance characteristics of coal-water slurry (CWS) flowing through three types of local fittings, namely, the gradual contraction, sudden contraction and 90° horizontal bend, were investigated at a comprehensive transportation test facility of CWS.
在水煤浆综合输送试验台上研究了水煤浆流经渐缩管、突缩管以及90°水平弯管的局部阻力特性,分析了渐缩角、管径比以及弯径比对上述局部管件阻力损失的影响。
2.
Experimental investigations were carried out on a pilot scale slurry transport apparatus to evaluate the friction losses across 90° bends,sudden contraction and sudden expansion for coal-water slurries with the presence of wall-slip behavior.
以水煤浆的流动特性(壁面滑移特性和流变特性)研究为基础,在中试规模的浆体输送装置上研究水煤浆流经90°弯管、突缩管和突扩管的阻力损失。
3.
The resistance characteristics of coal-water slurry fluid flowing through a straight pipe and three types of local fittings,which were gradual contraction,sudden contraction and 90° horizontal bend,were investigated at a pilot test-bed.
在中试试验台上研究了水煤浆流经直管、渐缩管、突缩管以及90°水平弯管的阻力特性,分析了渐缩角、管径比以及弯径比对上述局部管件阻力损失和均配的影响。
3)  sudden contraction
突然缩小
4)  reducing flange
渐缩突缘
5)  sudden contraction
突然收缩
6)  Styloid-shortening
茎突缩短术
补充资料:突然缩小
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性质:又称突然缩小。流体流经直径突然缩小的管子的现象。流体流近管子直径突然缩小处,流体有效截面积逐渐减小,并在短距离内继续减小到某一最小所谓“缩脉”处后,再继续扩大到小直径管子的整个截面。由于流体的速度发生变化,会引起流动能量的变化,产生热而损失能量。但由于产生的旋涡不大,故其阻力损失小于骤扩。

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