道格拉斯29岁，是个技术不错的拳击手，在以前的比赛中发挥不太稳定。Douglas was a 29-year-old journeyman fighter, erratic in his previous fights.定量供应很久以前就结束了饼干过剩的状况。Rationing had put an end to a surfeit of biscuits long ago.现在我们能公开谈论以前讳言不提的艾滋病问题。We can no...
The long term strength has gotten from the isochronal curves.通过等时曲线簇确定该滑带土的长期强度.The oscillations were isochronal.这些振动是等时的.The cycloid has an isochronal pendulum.摆线具有严格的等时摆....
Green and luxuriant are the pines and cypresses.苍松翠柏郁郁葱葱." Dry mulberry - trees , old cypresses, trembling in its chill . There are nine Baby phoenixes , outcrying one another ; "枯桑老柏寒飕 飗,九 雏鸣 凤乱啾啾.These pines and cypres...
The developments of manufacturing technology and research on ethylidene norbornene abroad were reviewed with 71 references.介绍了国外亚乙基降冰片烯的生产技术和科研工作的进展情况....