阀座密封负载和紧密性与反压力相关.Seating load and tightness is dependent on back pressure.不要安装在可能发生反压力的地方.Do not install where backpressure can occur.止回阀模块结构应该包括内 置 止动限止器,防止由于反压力造成阀瓣磨损.Check module construction shall include built - in ...
The dancing is uninhibited and as frenzied as an aerobics class.舞跳得非常奔放，就像在做有氧健身操一样疯狂。I'd like to join an aerobics class to improve my fitness.我想参加有氧运动训练班来增强体质。Unlike aerobics, walking entails no expensive fees for ...
Every underling feared him.所有的手下都怕他。Some speakers, if they're reading from a complete text, underling the words they want to emphasize.有的演说者在诵读全文的时候, 在他们想要强调的词下面划线.The underling mechanism of species diversity on pri...