composite tooth form是什么意思

用法例句

The Test and study of Excavator's Combined Dipper Teeth;

挖掘机组合斗齿试验研究

Aiming at the current status of the existing cone bits with steel and insert tooth are not effective in some complicated formations, according to the new knowledge of rock-breaking mechanism of cone bits, a new cone bit with composite tooth has been developed.

针对现有牙轮(钢齿、镶齿)钻头已难以对一些复杂地层进行有效钻进这一现状,根据对牙轮钻头破岩机理的新认识,研制了一种新型复合齿形牙轮钻头。