求翻译：过滤器内表面衬二层耐酸橡胶，设备内壁衬胶应完整无针孔，衬胶层应能接受15KV伏电火花检验而不被击穿是什么意思？

Second floor of acid-resistant rubber lining the inner surface of the filter device inner wall of rubber lining should be complete pinhole, rubber lining layer should be able to accept inspection by the 15kv volt spark without the breakdown of

Filter the surface lining layer 2 acids and inner wall rubber, rubber lining device should be complete without a pin-hole, rubber lining layer should be able to accept 15 volts KV spark testing, but not by breakdown

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Filter surface lined with two-story in acid-resistant rubber, device wall rubber lining should be complete no pinhole, lining plastic layer should be able to accept 15KV Volt spark testing without breakdown

The filter internal surface sets off two acidproof rubbers, the equipment endophragm lines with rubber should the integrity not have the pinhole, but lines with rubber the level to probably to be able accept 15KV to bend down the electric spark examination not to penetrate