究竟平衡作用发生在铬铁矿和硅酸盐下沉之前,还是在其后?Did equilibration take place before or after setting of chromite and silicates?如果脱模剂发粘, 则减少硅酸盐.If the mold spray is sticky, reduce the silicate.硅酸盐矿物的特点是耐熔和难以分离.Silicate minerals are characteri...
Despite his unconventional methods, he has inspired pupils more than anyone else.尽管他的方法不同寻常，但他给予学生的激励比其他人都要多。Schools should not compete with each other or attempt to poach pupils.学校之间不应该相互竞争，也不应该企图挖走彼此的学生。Ninety-nine per...