Structure of artificial diamond bit tool influenced efficiency cutting rock. Trapezoidal laminal bit tool was adopted.

金刚石碎岩刀头的结构影响着碎岩工具的加工效率。

Its place of articulation is alveolar, which means it is articulated with either the tip or the blade of the tongue against the alveolar ridge, termed respectively apical and laminal.

发音部位是 齿龈，即以舌尖或者舌尖后的扁平面（ 舌叶）抵住上齿龈脊发音。