protective enclosure是什么意思貌似是个专用词组

protective enclosure是什么意思貌似是个专用词组 protective protective protective protective protective Enclosure rating purged enclosure 请问有人知道这句话怎么翻译吗?Model size3 are supplied as a stand-alone unit in a protective case having an enclosure specification which is rater as IP00(in accordance with the IEC529)or MEMA 1 principle protective external enclosure是什么意思 electrical enclosure是什么意思 the enclosure movement是什么意思 shower enclosure是什么意思 storage enclosure是什么意思 enclosure material是什么意思 coil enclosure什么意思 Enclosure materials怎么翻译