Fluoride is one of the ingredients of Glister Multi - Action Fluoride Toothpaste.丽齿健?素牙膏亦含有氟这一种成份.Fluoride injury often is characterized by tip burn of leaves.氟化物危害的特点是叶片顶尖灼燃现象.A method of producing crystal sodium fluori...
Fluoride damage is generally restricted to areas near manufacturing plants.氟化物的危害一般局限在制造厂的附近.It'shows a thousandfold selectivity for fluoride over other common anions.它对氟离子的选择性比其它普通阴离子高几千倍.Fluoride injury often is c...
常规液体里分子之间的键合力相对较弱。The molecules in regular liquids are held together by relatively weak bonds.粘阻力等于合力.The viscous drags is equal to the resultant force.在这个和那个方向上的合力必定为零.The summations of forces in this and that direction...
The quarterback faked to the fullback and handed off to the halfback.四分卫做了个要把球传给后卫的假动作,却把球传给了中卫.The star halfback hauled down the pass for a touchdown.那位明星中位接住远传球触地得分.He started his ace left halfback on the second half.在...
Usually the fungus is an ascomycete but occasionally it is a basidiomycete.组成地衣的菌类多为子囊菌,也有担子菌类.Ascomycete car les spores sont enferm é s dans des sacs ( asques ) et hypog é e car souterraine.它之所以归属于此类是因为它生长在地下并且它的孢子(种子 )...
她好不容易弄到一张音乐会入场券。She managed to procure a ticket for the concert.我必须记住把买音乐会入场券的钱还给您.I must remember to pay you back for the concert tickets.获胜者得到了剧院的入场券.The winning entrant received tickets to the theatre....
...one of those rare occasions in history when a political leader risked his own power in the name of the greater public good...历史上少有的例子之一，政治领袖为更大的公共利益，甘冒丢官弃职的风险At the top, I risked a glance back.在顶端，我壮着胆回头瞟了一眼。Nancy ris...