Measure the approximate dimension of drilling hole.

测量打孔珍珠大致尺寸。

The image of drilling hole can be intuitively given by using ultrasonic detection.

利用超声波对钻成孔进行检测，可以直观地给出钻孔的垂直度、孔径等参数。

Product specification is a circular grinding mill, plane, grinding, drilling hole etc.

产品规格有外圆砂轮、平面磨、磨片、开孔钻头等。

Remove stem assembly (A) and lock setting by drilling hole and inserting dowel pin (C).

拆卸阀杆总成（A），并且通过钻孔锁定设置和插入定位销（C）。

The mine acquired good geological effect and economical benefit by Validating of drilling hole.

经钻孔验证，取得了良好的地质效果和经济效益。