The KI solution is used as a sample, and sonochemical yield is studied in the light of the difference between the quadrangular prism and quadrangular frustum of a pyramid.
依据四棱台和四棱柱形状的差异,研究了声化学产率。
A formula for the volume of arbitrary quadrangular prism is given by using vector colculus.
本文利用空间解析几何学中的矢量方法和原理求解底为任意凸四边形的四棱柱体积、并推导出其体积公式。
It has special external shape of tetragonal prism.
本文用固相反应直接合成出一种新化合物Bi-M-Fe-O-Cl(M=碱土金属)晶体微米-纳米管,它具有独立外形,为四方棱柱外形,外径约为0。