... needle electrode ==> 针电极,针形电极=>针电极 needle end ==> 针尾 needle endoscope ==> 针状内窥镜 ...
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closed-end needle 闭端管状针
spherical end needle roller 球面头滚针
rounded end needle roller 圆头滚针
Conical end needle roller 锥头滚针
trunnion end needle roller 曲面销头滚针
needle bearing with closed end 一端封闭的滚针轴承
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