词汇	prevent seepage of canal
释义	prevent seepage of canal 渠道防渗
随便看	manually operaed manuallyoperated manually operated manually operated signal manually operated spray system manually-operated spray system manually-operated manually-operated adjustment manually operated air compressor manually operated alternative manually operated call meter manually operated call point manually operated circuit manually-operated circuit manually operated clutch manually-operated clutch manually operated control vavle manually operated counterweight lift manually-operated digital timer manually operated digitiser manually operated directional valve manually operated door manually operated driving gear manually operated driving gear winch manually operated equipment