Only the cover with the compressed-air connection is required.
仅需要带压缩空气接头的盖。
By little investment a significant economic benefits was made through technical improvement on parallel connection of no. 1, no. 2, no. 3 compressed air pipe networks.
通过小投入，对1线、2线、3线空压机系统并联改造，实现1 - 3线系统供气，取得较大的经济效益。
By surrounding a gas-tight, pattented V-Seal with two compressed knitted wire mesh air gap spacers, the connection is made by simply sliding one section of pipe over another.
气密的V形密封器，两个压缩的编织金属网布气隙间隔器，略过管的一部分滑向另一部分。
By surrounding a gas-tight, pattented V-Seal with two compressed knitted wire mesh air gap spacers, the connection is made by simply sliding one section of pipe over another.
气密的V形密封器，两个压缩的编织金属网布气隙间隔器，略过管的一部分滑向另一部分。
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