两级的英文

• two-stage
  ◇两级传动 double-stage driving; 两级阀 two-stage valve; 两级放大器two-stage amplifier; 两级加速器 two-stage accelerator; 两级逻辑 two-level logic; 两级预选 double preselection

• 两:    two
• 级:    level; rank; grade
• 两级泵:    two speed pump; two stage pump; two-speed pump; two-stage (two-speed) pump; two-stage pump
• 两级的:    double-stage; double-step; twin-stage; two-stage; two-step
• 两级阀:    two stage valve; two-stage valve

例句与用法

1. Its centerpiece was a communications console on a dais two steps above floor level .
   它的中心部件是位于地面两级台阶之上的调度台上的通讯控制板。
2. As a two-stage vehicle, the saturn i had full orbital capability for a variety of payloads .
   作为一个两级飞行器的“土星”具有可将不同有效载荷送入轨道的能力。
3. Jem skipped two steps, put his foot on the porch, heaved himself to it, and teetered a long moment .
   杰姆连跨两级踏上走廊，身子跟了上去，然后踉跄好一阵才站稳。
4. Another solution is to use two stages of scrubbing and design the first one primarily for dust removal and humidification .
   另一种办法是采用两级洗涤，第一级主要是设计为除尘和增湿之用。
5. Acts as the top of a two - level named hierarchy of
   集合的两级命名层次结构的顶级。