An experimental investigation on purification of ethylbenzene waste gas a biofilter packed with ceramic pellets.以陶粒作为生物过滤床的填料净化含乙苯废气.They said they were peppered with shotgun pellets as they walked in the forest.他们说在森林行走...
Suddenly the garden was peppered with pellets.突然间花园遭到扫射。food pellets for chickens团粒鸡食Beetles bury pellets of dung and lay their eggs within them.甲壳虫把粪粒埋起来,然后在里面产卵....