- 重点词汇
- periodn.一段时间,时期;周期;<数>(周期函数的)周期;(练习、训练、学习的)时间,时段;(人生或国家历史的)阶段,时代;<美口>结束,终止;课时,学时,节;(妇女的)经期,月经;<美> 句号,句点;<医>病期,病程;<天>自转(或公转)周期;(冰球等比赛的)一局;<音> 乐段,乐节;完整句(尤指含有若干从句、结 构工整的复合句);纪(地质年代,代下分纪)
- noadv. 不;否;一点也没有;
- smalladj.小的;难为情的;低级的,卑劣的;细微的,微弱的;
- territoryn.领土;地盘;范围;
- questionn.问题;议题;怀疑;考题;
- aart. (用于可数名词或单数名词前,表示未曾提到的)一(人、事、物);用于前有形容词或后有短语的不可数名词前;一(个);每一(个);任一(个);
- to cover覆盖;遮盖;盖上;遮蔽
- inprep. 在里面;在(某范围或空间内的)某一点;在(某物的形体或范围)中;在…内;在…中;进入
- 相关例句
To reach the farmhouse the soldiers had to break cover and run across a field.
为了到达那户农家,士兵们不得不从躲藏处出来,并穿过那块农田.
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It'seems from your correspondence column that Harold Wilson a sacred cow.
从你的读者来信专栏看,哈罗德威尔逊好像是个批评不得的人.
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It'seems from your correspondence column that Harold Wilson is a sacred cow.
从你的读者来信专栏看,哈罗德·威尔逊好像是个批评不得的人.
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The results show that a large enhancement of stimulated emission appears at the photonic band edges.
当在介质中掺入具有增益特性的介质时,靠近光子带隙边缘就会出现较强的受激辐射放大.
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The Ce-atomic clocks on board the GPS satellites are based on stimulated emission.
GPS上安装的铯原子钟是基于受激发射的.
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The sensitivity can be further enhanced using stimulated emission of the thin films.
而利用薄膜的诱发放光特性,感受度可进一步提升.
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The term laser stands for light amplification by stimulated emission of radiation.
“激光”这个术语原意是利用辐射的受激发射来放大光波.
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Sources-Laser principles, spontaneous and stimulated emission, rate eqns, output power.
1212光源 - 雷射原理, 自发与被激发的放光, 比例方程式, 输出功率.
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Some are great artists and some are just great at reproducing others art.
有的是伟大的艺术家,有的则只是善于复制他人作品.
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When people are as great at their sport as Phelps is, everyone expects a lot.
当人们和菲耳普斯一样都钟爱他们的运动项目时, 每个人都期望的很多.
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Alfred, king of England, is a great scholar as well as a great ruler.
阿尔弗雷德, 英格兰的国王, 是一位伟大的统治者,同时也是一位伟大的学者.
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