1.Suitable for all rotten pond too , floorpassway and cannelure , etc .

1.也适用于切腐池。

2.This occurs at the weak cannelure, which is a groove allowing the bullet casing to be sealed to the copper jacket.

2.在脆弱的子弹上，而子弹个深沟来将弹壳密封到铜套里面。