深孔钻有两种类型，即用于钻盲孔的中心切削深孔钻和套孔钻。
There are two kinds of gun drills, namely, the center-cut gun drill used for drilling blind holes and the trepanning drill.
一个用于连接刀片刀柄或类似物品孔钻了中央，稍微偏离中心。
A hole for attaching a blade hilt or similar item is drilled up the middle, slightly off centre.
并详细讨论钻中心孔机的工作原理和机械结构的设计，采用本设备企业可以降低生产成本及提高生产效率。
Because of the use of this equipment, enterprises can reduce the production costs and raise the production efficiency.
本实用新型公开了一种尾端带中心孔的克氏针，属于外科医疗器械，特别是骨钻的附件。
The utility model discloses a Kirschner pin with a central hole on the tail end, belonging to a surgery medical device, in particular to a fitting for a bone drill.
在电机轴中心钻有一个通风孔，利用电机风扇的风通过通风孔形成一气流回路带走磁线圈和转子涡流损耗产生的热量。
An airway in the center bit of the electric engine axis is used for taking away the heat which the magnetic coil and rolling eddy current loss produce.
在电机轴中心钻有一个通风孔，利用电机风扇的风通过通风孔形成一气流回路带走磁线圈和转子涡流损耗产生的热量。
An airway in the center bit of the electric engine axis is used for taking away the heat which the magnetic coil and rolling eddy current loss produce.
应用推荐