... sealed radioactive source 释义：密封放射源 needle seal 释义：密封针,针状密封垫 water-tight 释义：防水的,密封的 ...
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The main features are as follows: Elasticity can be used as shock, seal, gasket and an elastic steel wire needle felt cloth base material.
主要特征如下：富有弹性可作为防震、密封、衬垫和弹性钢丝针布底毡的材料。
Metal rifle body, soft seal between the top of the nozzle and the needle, ready for use.
金属枪体，使用方便，喷管顶端部位与顶针的密封采用软性材料密封，经济实用。
Plastic rifle body, soft seal between the top of the nozzle and the needle, ready for use. Economical but last...
塑料枪体，喷管顶端部位与顶针的密封采用软性材料密封，经济实用。
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