thread chasing machine 螺纹车床 ; 切螺纹机
Thread chasing dial 乱扣盘 ; 刮扣盘
thread chasing 梳螺纹
thread chasing lever 螺纹刻度手柄
thread chasing device 切螺纹装置
Thread chasing with die-heads 用板牙头切螺纹
Cylindrical thread chasing cutter 圆柱形螺纹梳刀
carbon screw thread chasing tool 炭素螺纹梳刀
chasing thread
追逐线程
以上为机器翻译结果，长、整句建议使用 人工翻译 。
They are chasing down every thread not just from al Qaeda but any other actor out there that might be engaging in terrorism.
WHITEHOUSE: President Obama News Conference
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