However, backflow may now be creating other side effects.不过, 眼下回流可能正在引发其它一些负面影响.From this causes two backflow agitation efficiency not high substantial clause.由此引起二次回流搅动效率不高的重要原因.Backflow preventer manufactured from 300 ...
For use with backflow preventer test cocks to protect from damage.用于防回流阀测试旋塞,防止受到破坏.Backflow preventer manufactured from 300 Series stainless steel for corrosion resistance.防回流阀采用耐腐蚀的300系列不锈钢制造.However, backflow may now ...
My voice cleaves to my throat, and sob chokes my utterance.我的噪子哽咽, 泣不成声.The action is similar to that of other automatic chokes previously discussed.其作用与上面讨论过的其它自动阻风门相似.When they tighten their belts, austerity ripples ou...
The course will encompass physics, chemistry and biology.课程将包括物理 、 化学和生物学.Note that these contours do not encompass the crack tip.注意这些围道,都不包含裂信尖端....the extra services, which start next September and encompass a wide ran...