Results The disease take place easilyonthe patient who have high years old , high blood press, diabetes, high blood grease.
结果：该现象易发生于老年、合并高血压、高血脂、糖尿病及有肾功能不全史的患者。
3
The invention provides a switch device which can prevent bad contact of the lubricating grease between a moveable contact portion for press contact and a fixation contact portion.