... 钢制安全壳底封头 CVBH 封底、封四、底封 Back cover 罐底双重封缝机 bottom double seaming machine ...
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底封是一种涂在汽车底部的防水材料。
The underseal is a kind of waterproof material to coat the bottom of the car.
主要制作风琴式加厚的母粒外包装底封袋。
The main production of the organ thicken masterbatch packaging envelope at the bottom.
通过对酯化反应釜底封头腐蚀问题的分析，提出改进搅拌方式的解决方案。
The program of improving the mixing form was proposed through the corrosion analysis of the head at the bottom of esterification reactors.
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