... 高真空电子倍增管 augetron; 高真空电子管 high-vacuum tube; hard valve; 高真空电子管脉冲发生器 hard-tube pulser; ...
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Metal Hard Seated Butterfly Valve 进口硬密封蝶阀 ; 金属硬密封蝶阀
Multi Hard-seal Butterfly Valve 金属硬密封蝶阀 ; 金属硬密封碟阀
metal hard sealing ball valve 金属硬密封球阀
Hard Sealed Ball Valve 硬密封球阀
The main problems of the camshaftless valve actuation are long response time, hard valve landing, high power consumption and complex…
无凸轮轴气门驱动的主要问题是响应速度不够高、气门落座冲击、能耗过高以及驱动系统复杂昂贵。
Some economist argue that emigration can be a useful safety valve in hard times, reducing the numbers of the unemployed and avoiding the debilitating effects of long-term unemployment.
一些经济学家指出在苦难时期移民可能是一个平安的阀门。这样可以减少失业率，还能避免长期失业的影响。
The new designed valve has metal-metal plane hard airproof structure, using durably grinding material near the flowing road to improve the airproof surface usage life-span.
设计的阀门采用了金属-金属的平面硬密封结构，在流道附近采用耐磨损的材料，提高阀门密封面的磨损寿命。
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