心皮是由大孢子叶两边愈合进化而来的.It has evolved by fusion of the two edges of the megasporophyll.孢子异型:指植物产生两种大小不同的孢子: 小孢子和大孢子.Heterospory The production of two different sizes of spore: microspores and megaspores.通常较大的大孢子含有更多的贮藏养料.The ...
这只不过是你可以做的各种试验中的一例罢了。That's just one example of the kind of experiments you can do.我仅以他为例来说明英国工业界的典型反应。I am merely citing his reaction as typical of British industry.每5例癫痫病中约有两例是在睡眠过程中发作的。About two in every five epi...
这一工艺的潜在收益不可估量。It is hard to overestimate the potential gains from this process.东窗是中世纪玻璃安装工艺的奇迹。The East Window is a wonder of medieval glazing.刻蚀工艺的分辨率是图形转移保真度的量度.The resolution of an etching process is a measure of the ...
Her bead necklaces and bracelets jangled as she walked.她的珠子项链和手镯在她走动时叮当作响。Jane took out her keys and jangled them.简掏出钥匙丁零当啷地晃着。The shop bell jangled loudly.商店的钟发出丁零当啷的巨大响声。...