加速度和速度都是矢量。Acceleration and velocity are both vectors.我们将用惯性矢量来定义惯性标量.Inertia scalars are defined in terms of quantities called inertia vectors.仅由两个矢量组成的力偶叫作简单力偶.A couple consisting of only two vectors is called a simple...
Chromosomes also determine the sex of animals.染色体也决定动物的性别.Each of four chromosomes divide longitudinally.四种染色体的每一种都沿着纵向分裂.At this point esch chromosome consist of a pair of chromatids and the two associated chromosomes a...
One in five undergraduates cannot write grammatically.有1/5的本科生写作不合语法规则。All undergraduates reading English attend a turtorial group each week.所有攻读英语的本科生每周上一次导师辅导课.This is a course for undergraduates.这是为本科生开的一门课....