through-hole component
... through-hole board 穿孔式电路板 through-hole component 穿孔式元件 through-hole via 经由通孔，通孔 ...
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对冲击式曲线穿孔机的空间坐标定位方法进行了有效的分析，并对一个重要的定位元件———旋转角度传感器进行了研究。
In this paper, the locating method of pneumatic boring machine is analyzed and an important sensor is designed, which can measure the roll Angle of pneumatic boring machine.
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