短语词组短語side wall cutting sampler 切割式取心器thin -wall sampler 薄壁取土器thick -wall drive sampler 厚壁打入式取土器hydraulic wall sampler 液壓井壁取樣器thin wall sampler 薄壁取土器;薄壁取樣器thick wall sampler 厚壁取土器 返回 wall sampler