It has advantages such as higher efficiency and inhaling ability, longer running time with no failure, without medium leakage, lower noise, convenient management, etc.
该类泵具有效率高,自吸能力强,无故障运转周期长,无泄露,噪音低,现场管理方便等特点。
They also take longer to run, so running a lot of them together can increase your overall test time dramatically.
当然它们也要花更多时间运行,所以同时运行很多的组件测试会显著地增加总的测试时间。
Your body needs time to heal. I would advise waiting at least six weeks before starting running - and would probably argue to give it a bit longer, perhaps eight weeks.
你的身体需要时间来愈合,我会建议至少6周后再开始跑步,如果可能的话,也许8周后才合适。
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