齿轮制图标准。第1部分：正齿。螺旋齿。双螺旋齿和齿条。
Gear drawing standards - part 1: for spur, helical, double helical and rack.
正牙医师从比利的口腔内部取了模型来制作齿板。
An orthodontist took a cast of the inside of Billy's mouth to make a dental plate.
正角梯平齿，适用于推台锯单板切割各种贴面板，胶合板，层压板，纤维板等，切割成效优良，倡议合作划线锯运用。
TCG teeth with positive hook angle, for cutting single side or double sides laminated MDF and chip board with better finishing by using of scoring saw.
正角梯平齿，适用于推台锯单板切割各种贴面板，胶合板，层压板，纤维板等，切割成效优良，倡议合作划线锯运用。
TCG teeth with positive hook angle, for cutting single side or double sides laminated MDF and chip board with better finishing by using of scoring saw.
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