It was a surprise to the world, a shock to many Americans, and the starting gun for the space race between the superpowers.
在冷战中，这个消息震惊了世界，并给美国人带来巨大冲击，同时也是两个超级大国间太空竞赛的发令枪响。
Pre-splitting blasting experiments were carried out to obtain normal pre-splitting blasting parameters such as hole diameter, hole space, gun- powder charge line density, and uncoupling factor.
通过大量的预裂爆破试验，得出了适用于该边坡的炮孔直径、炮孔间距、线装药密度、不耦合系数等一系列常规预裂爆破参数。
We obtained the tissue pathologic diagnoses of 24 patients with lung space occupying lesion with automatic biopsy gun under the guidance of color Doppler ultrasound and 20g needles.
应用信航牌自动活检枪、20g槽式穿刺针在彩色多普勒超声引导下对24例肺外周型占位性病变进行自动组织切割穿刺活检，全部获得病理学诊断。
If a gun tap or spiral fluted tap cannot be used, a three fluted tap which permits extra chip space, is recommended.
如果螺尖丝锥或者螺旋槽丝锥不能被使用，推荐使用具有较大排屑槽的三槽丝锥。
If a gun tap or spiral fluted tap cannot be used, a three fluted tap which permits extra chip space, is recommended.
如果螺尖丝锥或者螺旋槽丝锥不能被使用，推荐使用具有较大排屑槽的三槽丝锥。
应用推荐