The cold extrusion process and mould design have been introduced of the pressing drill sleeve.
介绍了冲钻套筒的冷挤压工艺、 模具设计。
The invention comprises a handle and a drill bit, wherein the drilling bit has a trocar structure consisting of two parts, namely a sleeve and a tube core needle.
本发明包括手柄和钻头，钻头为套管针结构，包括套管和管芯针两部分组成。
The invention discloses a tree body injecting machine which comprises an electric drill device, an injecting part, a fixing sleeve and a medicine discharging device.
本发明公开了树体注射机。它包括有一电钻装置、一注射部、一固定套以及一出药装置。
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