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随着利用水力絞关代替人力絞收錨纜的創造,再进一步發展將水力广泛利用于測流取沙、用重船魚測深以及發电使操作半自动化。利津站曾利用解放式水車原理,作了使水力傳遞带动臥关的試驗,当时由于流速太大,鉄鏈被絞断,試驗未获成功。艾山站亦曾利用解放式水車原理作了水力絞关带动鉛魚測流取沙的試驗,并获得成功。洛口水文总站根据这一情况,
With the use of hydraulic winch instead of manpower twisted anchor cable to create further development of hydraulic power widely used in the flow of sand, heavy fish deep sounding and power generation to semi-automatic operation. Lijin station had used the principle of the liberation of water tankers made hydraulic transmission driving the test of the bedroom, when the flow rate is too large, the chain was cut off, the test was unsuccessful. Aishan station also used the principle of the liberation of waterwheel hydraulic winch led lead fish measured the flow of sand and achieved success. Lok Kwu Hydrographic Station According to this situation,