Arbutus wood red - brown , can be made of fine wood working equipment.杨梅树木质 红褐色, 可制作细工的木器用具.Did fruit arbutus eat to you can not catch a cold?水果杨梅吃了会不感冒 吗 ?Arbutus place: Pleasants street: pleasant old times.阿尔布图新小街: 普莱曾...
甲烷和丙烷是烷烃。Methane and propane are alkanes.某碳氢化合物已知可能是烯烃或是烷烃.A hydrocarbon was known to be either an alkene or alkane.直链烷烃使机器的 “ 爆震 ” 问题更加严重.The straight - chain alkanes exacerbate the problem of engine " knock "....