首页 >>> 海洋船舶设备及材料制造 AND 专利文献
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1 1/1 SCHWAN J (SCHA-Individual).1980-05-29.NL7811617-A.The arrangement is intended for the seabed skids (1) fitted at both ends of a cross-beam as used in dredge net fishing operations. It consists of a re... 1 1/1 |
