Jingjing listened to the steady tapping as Arnel thumped a piece of pipe against the thick beam above their heads.
阿恩尔用力敲打头顶上方靠在粗梁上的一根管子，京京听着不断的敲击声。
2
A particle in cell code has been developed to simulate the steady state of electron plasmas in an electron beam Penning trap and to study its scaling law.
应用粒子模拟方法研究了电子束潘宁阱中的非中性等离子体的稳定状态及其定标关系。
3
It is found that the loss in the crystal can make a mismatched incident Gaussian beam evolve to a matched one, and then become to a steady-state bright soliton.