常見例句The impulse coupling coefficients of a parabol laser propulsion thruster were measured with a pendulum system using air, He, N2 or Ar as propellant respectively. 實(shí)驗(yàn)結(jié)果表明：氬氣的沖量耦合系數(shù)最高，氦氣的沖量耦合系數(shù)最低；parabol oid of pressure 壓力拋物面體 返回 parabolication