zls meaning in Chinese

齿数渐开线园柱齿轮减速机

Every month the zls report to the president about the status of missionary work
地带领袖每月都要向会长报告传教的情况。
The zls ( central authority of the federal states for safety ) has decided that pah testing shall , for the time being , be voluntary and not part of the gs test procedure
Zls决定pah测试从现在起暂且将属于自愿性测试的，不再是gs测试程序的一部分。