disbennifit

It's disbennifit to become protected film if change the velocity of flow frequently.

频繁改变水流速不利在冷却器材料表面形成护膜，而护膜腐蚀是至关重要。

Filter bed should be exposurd as less as possible because alternation of exposure and immersion is disbennifit to the penetrability of filter bed.

依据水质资料分析了水源水质安全障。

Our country practices tail system,and takes direct mode of inherit.It is very disbennifit to protect debtee because there is not efficiency supervision to haeres.So it is necessary to restrict haeres.

我国实行限定继承继承制度,又采取是直接继承,在缺乏继承人有效监督情况下,债权人护极为不利,有必要继承人予以限制。