Done carelessly , it backfires and leaves a bad impression of him or her on the audience.

My old car backfires all the time.

我那辆旧车老是回火.

Also , this is why changing menus dynamically sometimes backfires.

这就是为什么动态地改变菜单有时候事与愿违.

If the engine backfires , the sudden pressure in the intake manifold forces the valve back.

如果发动机回火, 进气歧管骤增的压力就迫使阀门向后移动.

A sudden report rang out -- like the sound of a car backfiring.

突然响起一声爆裂声 —— 像汽车的逆火声.

The EPA's rules about what constitutes hazardous waste are backfiring against the nationwide recycling effort.

环保署关于有害物质的法规同全国资源回收的工作正好唱反调.

The engine keeps backfiring all the time.

发动机老是回火.

The airplane is slow after the backflip.

飞机在做完斤斗之后速度会变慢.

Can you do a backflip?

“你会后空翻 吗 ?”

Efficiency and backflow current are the two most important criteria of multistage depressed collector.

效率与电子回流是多级降压收集极的两个非常重要的指标.

Four required per backflow preventer.

每个防回流阀需要四个.

Media type check valve for preventing backflow.

止回阀类用于阻止介质倒流.

Slowly open upstream shutoff and allow the backflow preventer to fill slowly.

慢慢开启上游关闭阀,让防回流阀慢慢注水.

Installing a backflow preventer in a pit or vault is not recommended.

不建议在坑内或拱顶内安装防回流阀.

During irrigation period , the backflow from the farmland pollutes the branch.

每当农业灌溉之时, 支流都因倒流而严重污染.

The backflow preventer must be installed upstream of the regulator.

防倒流装置必须安装在调节阀的上游位置.

They prevent steam backflow from the header to the boiler.

这种阀门能够防止蒸汽从集气箱倒流到锅炉里.

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.

Especially made for testing all reduced pressure zone backflow preventers.

专用于检测所有减压区防回流阀.

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.