第二级的英文

• second stage
  ◇第二级电压范围(30伏至175伏) second voltage range; 第二级校正 second-order correction

• 第二:    second
• 级:    level; rank; grade
• 第二级光谱，第二级谱:    second order spectrum
• 倒数第二级:    penultimate stage
• 第二级产业:    secondary sector of economic activity

例句与用法

1. Then the second stage is fired .
   然后第二级点火。
2. Here we carry out computations up to the second degree only .
   在这里，我们只把计算进行到第二级近似为止。
3. The v-2 pushed the two-stage rocket to an altitude of 20 miles and then broke away .
   V2将第二级火箭推到20英里的高度，然后脱落。
4. The gas and petrol are examples of secondary fuels by which coal and oil may be more effectively used .
   焦炭，煤气和汽油是更加有效地利用煤和石油的第二级燃料的范例。
5. Start by performing a loop similar to that in level ii
   开始的程序同第二级的"内浸斗" 。