两张抄件由船长或其代理签字.Two copies will be signed by the ship's master or his agent.抄件与原件相符.The copy corresponds with the original.随信附上本人致汤普林先生原函抄件一份,请查收.Attached please find a copy of the letter I wrote to Mr. Thompson....
内壳层跃迁机制是实现超短波长激光的一种很有潜力的方案.Employing the inner - shell transition mechanism is a potential way to obtain ultra short wavelength lasers.电子原子碰撞内壳层电离截面在实验及理论研究两方面都具有重要意义.The study inner - shell ionization cross - sections b...