1·From the energies and momenta of the two jets, researchers can infer the mass of the particle that produced them.
从两束喷注的能量和动量可以推算出产生它们的粒子的质量。
2·The use of the free undamped normal modes is seen to ensure that the linear and angular momenta of the distortional motion vanish.
看来采用自由无阻尼正规模态可保证变形运动的线动量和角动量为零。
3·By measuring the scattered neutron intensity versus momenta and energy transfers, the structure and dynamical information of the biological macromolecules can be obtained.
测量中子在生物样品上的动量和能量转移，可以得到动力学结构因子。
4·By introducing the rectangular wave packet, we have obtained the mean expectation values of the coordinates, momenta, and the square of these operators.
结果表明，在经典波包上笛卡尔坐标、动量的平均值为零，而它的平方的平均值随时间变化。