Adopting cold-drawing hight coils or bars of stocks and heating automatically it fits for lightproducing six angle bolts, rivets and other articles with heads.
采用冷镦拨光盘或棒料，自动进行镦锻，适用于制造光六角螺栓，锍钉及其它带头部的零件。
2
The calotype was revolutionary in its use of chemically treated paper in which areas hit by light became dark in tone, producing a negative image.
卡罗摄影法对化学处理纸的使用是革命性的，其中光照区域色调变暗，形成负像。
3
If aimed toward Earth, this outpouring of energy can interact with our magnetosphere, infusing molecules in the atmosphere with extra energy that then gets released as light, producing aurorae.