These lasers usually employ chemical combustion to energize directly the lasing process by various one - way reactions.这些激光器一般利用化学燃料,通过各种 单向 反应直接驱动激射过程.Random lasing is intensively investigated for its wide prospective.随...
The President ought to seize this opportunity to make his peace with political parties and negotiate a speedy return to democracy...总统应该抓住这个机会与各政党握手言好，协商尽快恢复民主。Have you finished your composition already?You are very spee...
The new superconductors look set to carve themselves a useful niche in the world's electrical industries.这种新的超导体看起来很有可能在世界电气工业中占得能够发挥作用的一隅。A number of companies have now made the high - temperature superconductors i...
A total of 109 patients underwent physical examination, electrocardiogram and echo cardiography.总计109个病人做了体格检查, 心电图,超生心动图.The best main echo half parameter equipment and 7 - band graphic equalizer.最佳主混音半参量均衡及7段图示均衡.In ba...