backflow的例句（backflow在句子中的用法）

• 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.
• 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.
• 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.