重返大气层的航天器受到重力的作用。Spacecraft which are re-entering the earth's atmosphere are affected by g forces.反射器通过支架牢牢地固定在航天器的侧面。The reflector is held onto the sides of the spacecraft with a frame.科学家密切跟踪航天器的运行.Scientists are ...
Megamalls and fast food restaurants line the highway system.公路系统沿线有大型商场和快餐店。The new system is still in the planning stages.新体系仍处于规划阶段。The volume of scheduled flights is straining the air traffic control system.定期航班的数量正让空...
Sergeants and corporals outnumber private soldiers.中士和下士的人数超过了列兵。Platoon sergeants fell their men in on the barrack square.排长们在营房广场上整顿队伍.Once the decision to expand was taken , the privates could become sergeants, the se...
The employments in vocational colleges are various to different educated targets.不同类型的高职院校,不同的教育对象群体,所需就业能力不尽相同.Students from vocational school fill the need of the factory for technicians.职业学校毕业的学生填补了这家工厂对技术工人的需求.The tr...
在有些植物中,光合作用产物是以多聚果糖的形式储藏.In some plants photosynthetic products are stored in the form polyfructosans.波里发现等克分子量的示踪葡萄糖和果糖.Burley found labeled glucose and fructose in equimolar amounts.果糖是大多数的人体必需的基本高级碳水化合物之一.Fructose is ...