利用空心金属球的聚能效应和密封性，可以达到很好的水下爆破切割效果。

And when cutting underwater, good effects were achieved because of the Mohaupt effect and airtightness of the hollow metal balls.

喷油泵的密封性试验。

Checking of the sealing of injection pump.

普通喷油器密封性检查。

Checking of the sealing of injectors.

共轨喷油器密封性检查。

Checking of the sealing of CRI.

检测第二止回阀的密封性.

To test for tightness of second check Valve.

我方所有的木箱密封性很好.

All our wooden cases are well sealed.

所述的热熔胶层具有密封性。

The hot melt adhesive has tightness.

密封性好，可延长食品的保鲜期；

Good sealing to extend the shelf life of food;

门柱密封采用特有的双层毛刷增加了更好的密封性.

Brushes of high seal performance are installed om sides of door columns.

试验表明，有机硅密封胶具有优异的耐水性和耐油密封性，但耐汽油性较差；

The results showed that silicone sealant had the excellent water resistance and oil sealing but relatively poor gasoline resistance .