The barrel, plunger and standing valve of the pump were designed, improving the barrel's force conditions and reinforcing the screw thread's sealing performance and tensile strength.
该泵对泵筒、柱塞、固定阀做了设计，改善了泵筒受力状况，提高了螺纹的密封性能和抗拉强度。
Varicose veins are veins venous valve function damaged, mostly congenital causes, and long standing or long time to maintain a posture is its inducement of.
静脉曲张主要是血管中静脉瓣功能出现损坏，多是先天性原因造成的，而久站或长时间保持一个姿势只是它的诱因之一。
He continues a long-standing artistic tradition of imagining the end of civilization, a form of emotional and spiritual escape valve operated since man found a means to express himself.
他长期以来保持着对文明终结的艺术性想象，这是一种情感和精神的宣泄形式，并以此表达自我。
Standing operating machine with remote controlled hydraulic valve button does not require the operator to bend over to lock nuts and is in accordance with theories of Ergonomics.
该机操作设计为人的自然站立式，配合液压远程阀按钮，螺母松紧无需弯腰作业，符合人机工程学原理。
When the vapor is discharged by the pressure-limiting valve, the high temperature is discharged upward from the top end, and the man standing on the side to adjust firepower is not hurt.
当蒸汽由限压阀排出 时，高温汽体由顶端向上排放，不会伤到站在侧面调节火力的人；
When the vapor is discharged by the pressure-limiting valve, the high temperature is discharged upward from the top end, and the man standing on the side to adjust firepower is not hurt.
当蒸汽由限压阀排出 时，高温汽体由顶端向上排放，不会伤到站在侧面调节火力的人；
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