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- The pump conversion efficiency is relevant to the erbium-doped fiber (EDF) length and the pump power allotment of forward and backward pump lasers. 光源的抽运转换效率与掺铒光纤长度、前后向抽运功率分配有关。
- Based on the standard coupled equations describing fiber Raman amplifiers (FRAs),a generalized automatic algorithm with the help of Genetic algorithm and global convergent Broyden method is proposed for the design of broadband backward pumped FRAs. 基于拉曼放大器的功率耦合方程 ,采用遗传算法和全局收敛的布雷登方法 ,提出一种优化设计不同形式反向抽运宽带光纤拉曼放大器的自动配置算法。
- He lined out for home without a backward glance. 他头也不回，急忙往家里走去。
- This part of the country is still backward. 这个国家的这个地区仍很落后。
- Blood is pumping out of his belly like a fountain. 血像喷泉似地从他的腹部涌出。
- In some cities housing conditions went backward. 某些城市的住房条件越来越差。
- The teacher was patient with backward children. 那位老师对迟钝的学童十分耐心。
- Blood was pumping out of his belly like a fountain. 血像喷泉似地从他的腹部涌出。
- He looked backward over his shoulder. 他回头向后看。
- Her heart was pumping very fast. 她的心脏跳得很快。
- He was pumping away the whole day. 他整天忙着用唧筒抽水。
- She looked backward over her shoulder. 她回头往後看。
- A tyre expands when you pump air into it. 轮胎一打气就鼓起来。
- Sheila is very clever but rather backward in expressing her ideas. 希拉很聪明，然而在表达思想时却有些腼腆。
- Although he is clever, he is backward in giving his views. 他虽然很聪明，却不善发表他的意见。
- Lashing velocity of pump is concerned with nature of air. 泵的抽气速率与气体的性质有关。
- Frank was so backward that he hesitated to ask her to dance. 法兰克非常腼腆,不好意思请她跳舞。
- She succeeded in pumping the name of the winner out of him. 她从他的口中打听到了获胜者的名字。
- He had a firsthand taste of life in backward mountainous areas. 他直接体验过落後山区的生活。
- This tire is flat; you didn't pump enough air in. 这个轮胎没气了;你并没打足气。
