... hydraulic mechanical packer 水力机械式封隔器 hydraulic closed packer 水力密闭式封隔器 hydraulic compression type packer 水力压缩式封隔器 ...
基于42个网页-相关网页
hydraulic allyclosed packer
... hydraulic allyclosed packer 水力密闭式封隔器 hydraulic compressive packer 水力压缩式封隔器 hydraulic mechanical packer 水力机械式封隔器 ...
基于8个网页-相关网页
·2,447,543篇论文数据，部分数据来源于NoteExpress