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汉语拼音：bǐ chōng

又称比冲量”、比推力”。火箭发动机单位重量(力)推进剂产生的冲量，或单位重量(力)流量的推进剂产生的推力。其值决定于发动机的结构设计、工作参数和使用的推进剂。工作介质喷射流速度愈大，比冲愈高。

• The propellant which has higher density special impulse can be applied into ramjet which has no nozzle.

  具有较高密度比冲的高能推进剂可用于无喷管推进的冲压发动机中。

• The Long March 5 has core stages fed by liquid hydrogen and liquid oxygen, another technology route to high specific impulse.

  长征5有由液态氢和液态氧，另一种技术路线，高比冲美联储的核心阶段。

• However, for the improvement of specific impulse and efficiency, high r plays a more important role.

  较高的r能获得高的比冲和效率，尤其是比冲随着r的提高明显地单调上升。

• To design a high performance injector and to improve engine impulse performance are the permanent goals of engine designers.

  设计高性能喷注器、提高发动机比冲性能是发动机设计者一直追求的目标。

• MEMS colloid thruster array can meet the thruster index requirements of small size and high specific impulse.

  MEMS阵列式胶体推进器具有体积小，比冲高等特点，能够满足微卫星发展需求。

• It is a reliable measuring method of the specific impulse for the high-burning rate propellants.

  为高燃速推进剂比冲测试提供了可靠的试验依据。

• The thrust and specific impulse were calculated and the injection efficiency was derivate.

  最后计算出推进器的推力与比冲，推导出推进器的喷射效率。

• However, the conjunction gives a lot more control to the individual than does the opposition aspect.

  然而，合相对于个体的控制比冲相更大。

• Based on the results obtained experimentally, It is found that the fuel-based specific impulse declines with fill fraction.

  结果发现，以燃料质量为基础的比冲随着填充系数的增大而减小；