也就是说需要注意因为进行人工流产术、放环或取环手术，而导致的使细菌上行感染，这样也可以引起盆腔炎的发生。

That is because the need to pay attention to abortion, was put for ring ring or surgery, in that bacteria infection, such upward can also cause pelvic inflammation occurs.

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传感器外壳上的圆形安装孔（非槽形）可避免由于错误的安装距离或运动而导致的碰撞或震动引起的维修。

Round mounting holes (not slots) in the sensor housing avoid incorrect mounting distances or movement through impact or vibration which otherwise may require maintenance.

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多种因素可以引起DNA损伤而最终导致基因产生错义突变、缺失或错误重组。

DNA damage caused by many factors may lead to missense mutation, deletion or illegal recombination.

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