多晶颗粒 meaning in Chinese

polycrystalline particle
polycrystallineparticle

B - doped diamonds were obtained under the condition of 1250 ~ 1350 and 5gpa ~ 6gpa . color of diamond became deep with boron contents increasing , till becoming black . b - doped diamond was polycrystalline , and crystal surface was developed incompletely
利用这些gics ，在1250 1350 、 5 6gpa下合成了含硼金刚石，金刚石颜色随着硼含量增加而加深直至黑色，含硼金刚石生长成多晶颗粒，晶面发育不完整。