stop check valve (boiler non-return valve)

the design of milling clamps for non-return valves

单向阀专用铣夹具的设计

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x one return filter with non-return device override

一个附带止回装置的返回滤波器

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x one pump inlet filter with non-return device override

一个带有止回装置的泵入口过滤器

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study on the diameters of piston and valve ball of non-return valve

单向阀阀球与活塞直径设计尺寸的研究

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retaining valve(non-return valve, check valve)

止回阀（逆止阀，单向阀）

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non-return valves for special applications

特殊用途的单向阀

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flanged suction strainers without non-return valve

无止回阀。带法兰的吸滤器

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plc used in control system of hydraulic non-return butterfly valve

PLC在液压止回蝶阀控制系统中的应用

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key component to quality control of injection molding product--non-return valve

影响注射成型制品质量的重要部件--止逆环

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non-return to the universally condemned policies and practices of recent past;

不得恢复不久以前实行的遭到普遍谴责的政策和做法；

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the research on keeping pressure expiration in hydraulic control non-return valve

液控单向阀保压失效问题的研究

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setting of non-return valve in the fire fighting and water supply system

消防给水系统止回阀的设置

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steadiness of non-return valve against additional disturbance

外干扰下扑板式止逆阀的稳定性

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application of non-return grout injection nozzle in chemical grouting of concrete crack

混凝土裂缝化学灌浆逆止注浆嘴的应用

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verification of the withdrawal from cambodia and non-return of all categories of foreign forces;

核查各种类型的外国武装力量撤出柬埔寨并不得重返；

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canted disc butterfly valve link butterfly valve combined non-return butterfly valve

斜阀盘蝶阀连杆式蝶阀止回式蝶阀

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the heated oil-injected compressed air, presses through the non-return valve in to the oil separator

把热的压缩空气，从单向阀压缩至油品分离器中

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fixed firefighting systems - components for gas extinguishing systems - requirements and test methods for check valves and non-return valves

固定消防系统.气体灭火系统件.阀门和非回阀门检验的试验方法和要求

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in addition to this, install a non-return value in the oil supply line.

此外，在供油管中要安装一个止回阀。

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i have stepped onto a non-return road in love, but, with the rose you sent to accompany me on my road, why should i worry about loneliness?

在感情上我已是踏上了一条不归之路，可日后路上有你送的花香伴随，何愁寂寞呢？

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