The adhensive forces were found to be related to the metal to oxygen chemical - bond energy.已经发现,粘着力与金属-氧的化学结合能有关.Chemical bond mainly includes electrovalent bonds , covalent bonds, and metalic bonds.化学键主要有离子键 、 共价键 、 金属...
She makes no attempt to stifle a yawn.她忍不住打了个哈欠。It is best to stifle curiosity and leave birds' nests alone.最好能克制住好奇心，不要去碰鸟巢。Gritting my teeth, I did my best to stifle one or two remarks.我咬紧牙关，硬是吞回了几句话。All Villefort...