有资格的人员 meaning in English

competent personnel
qualified person

Filled cylinders should be held in quarantine until released by the qualified person
充好的气瓶应保持在待检区，直至有资格的人员放行。
Since any user subscribing to an isp ' s service may in theory access a corporate intranet , companies must be careful to allow only authorized personnel access
理论上订购isp （互联网服务供应商）服务的所有用户都能访问公司内部网，故各公司必须很谨慎，只让有资格的人员访问。
The introduction of test and calibration methods developed by the laboratory for its own use shall be a planned activity and shall be assigned to qualified personnel equipped with adequate resources
实验室为其庆用而制定检测和校准方法的过程应是有计划的活动,并应指定具有足够资源的有资格的人员进行
If you lack the necessary skills required to properly install this water heater or you have difficulty following the instructions , you should not proceed but have a qualified person perform the installation of this water heater
如果您不具备正确安装本热水器的必要技能，或难于按照说明书的规定去做，那么您就不应该从事这项工作，而应该请有资格的人员来进行本热水器的安装。