以下为句子列表：
英文: Is the earliest Chinese manufacturer of the aluminium alloy cooling rods for the drill rod welding in the PTC industry.
中文: 公司以扎实的科研力量为依托，雄厚的生产实力为基础。
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英文: The extensive range of optional equipment includes hydraulically operated drill rod clamps, rotary casing drives and casing oscillators.
中文: 更大的直径可选装钻杆夹持器,套管驱动器和摇管器.
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英文: The generously designed drill rod clamping device can be opened up fully to enable the installation of drilling tools and drill casings exceeding 171/2(444 mm) in diameter.
中文: 如图所示的钻杆夹持装置可安装最大直径为444毫米的钻具和套管.
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