This forms the basis for our mathematical expression for the electric field.这是电场数学表达式的基础。Mathematical physics is an almost impossibly difficult subject.数学物理是一门难得超乎想象的学科。He towers above his fellow students in mathematical...
本船小卖部供应饮料和食品.Our ship's store provides you with drink and food.我们要求承包商在小卖部安装灭火设备.The contractor was advised to install the fire equipment in canteen.由酒组成的一批货物;有酒卖的小卖部.A snack bar or small cafeteria, as on a military...
让他呆在中间是不是有什么目的？Is there some design in having him in the middle?一端为蓝色, 一端为红色, 这两种颜色在中间混成一色.One end is blue, one end is red, and the colors merge in the middle.隧道两端在中间相接时，仅有几英寸的误差。When the two ends of the tunnel met in th...
亚胺基杂环丙烷季铵盐的阳离子,一定是按协同反应的方式开环的.The aziridinium ions must all be opened by a concerted process.偶氮杂环丙烷是一类重要的 、 环内张力颇大的化合物.The diazirines are interesting , highly strained ring systems.在最佳反应条件下,环丙烷羧酸异丙酯的产率达92%.Under the opti...