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1·This drippage will not prevent the natural buildup of temperature in the boiler because the valve operates on pressure only.

由于这种阀门只是释放压力，因此这种滴水现象并不能防止锅炉内的温度自然升高。

2·The present invention discloses a roller brush which can collect the dripped paint and prevent the drippage of the paint on the human body.

本发明公开了一种能收集滴落涂料和防止涂料滴落到人身上的滚刷。