求翻译：注剂操作过程中，注剂阀接入注剂枪、装填密封剂、拆卸注剂枪均需先关闭注剂阀，确保安全。是什么意思？

The operation of the injection agent, the agent injection valve access injection gun filled with sealant, demolition are required to close the injection gun agent injection valve to ensure safety.

Note, in the course note, valve access note, guns, sealant, removing the nozzle, guns are required to first turn off the nozzle, valve and ensure safety and security.

正在翻译，请等待...

Note agents during the operation, note valve access note agents gun, filled with sealant gun needed to close the note, demolition note agent agent valve to ensure safety.

In the note medicinal preparation operating process, pours the medicinal preparation valve turning on note medicinal preparation gun, the filling aquaseal, the disassemblage note medicinal preparation gun must close the note medicinal preparation valve first, guarantees the security.