Warning: file_put_contents(/www/wwwroot/zidian/biehu.cn/cache/a4cd69fb100d3182f8a4d6ab54ff1c70.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/biehu.cn/index.php on line 58 movable beds例句_movable beds英汉例句_movable beds双解例句_甲百匯小鸡词典
This instrument has been developed to measure bed levels in hydraulic models, movable beds of beaches, harbours, estuaries etc. 近來，海岸、港灣、河口等模型已進行了渾水的動牀試騐，河牀沖淤地形是必不可少的測量項目。