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该书是辽宁省劳动局根据89《瓶规》,配合气体充装单位注册登记审查发证工作,组织编写的培训气体充装操作和管理人员的教材。
The book is Liaoning Province Labor Bureau under the 89 “bottle gauge”, with the gas filling unit registration and examination and certification work, organized by the training of gas filling operations and management of teaching materials.