And the cold light source lamp magnifying glass products neurosurgical head frame.
以及冷光源头灯放大镜颅脑手术头架系列产品。
I cracked my head on the low door-frame.
我的头撞在低矮的门框上了。
Advantage: frame can open, make replacing hammer head, back plate and lining board work easier.
优势：机架可以开启，使得更换锤头、反击板及衬板的工作更加简便易行。
Advantage: frame can open, make replacing hammer head, back plate and lining board work easier.
优势：机架可以开启，使得更换锤头、反击板及衬板的工作更加简便易行。
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