手动控制阀输出管线
hand control valve outlet line
隔水单动双管钻具
water insulation and single rotary and double tube drilling tool
各向异性动校正
anisotropic moveout correction
anisotropic dynamic correction
各向异性颗粒动理学
anisotropy kinetic theory of granular flow
铬鞣半硝黄牛二层劳动手套革
chrome semi-tanned cow split leather for working gloves