large inclusion(An optical microscope is used to count the number of large inclusions of over 30μm and the index of inclusion is calculated from this number. 使用光学显微镜对大于30μ m 的大型夹杂物进行计数，并据此计算出夹杂物指数。)
coke particle(The region is called a raceway because of the rapid recirculation of coke particles within this cavity, or void. 这一区域之所以称之为焦炭回旋区，是因为焦炭颗粒在这一空腔或空窝内做高速循环运动。)
