The major productive methods of serin are albuminolysis, fermentation method, chemical method and enzymic method. 其生产方法主要有蛋白质水解法 、 发酵法 、 化学法和酶法,其中酶法是现在研究丝氨酸制备的重要方法.
How far back can you trace your family tree?你的家谱可以追溯到多少代？A family tree is a diagram with branches, showing how the members of a family are descended and related.家谱是说明家族成员血缘承袭关系的明细分支图.It grew on a venerable and venerated ...
Pale colours are much more in vogue than autumnal bronzes and coppers.浅色比黄褐色和红棕色这些秋季色彩更流行。The Autumnal Equinox is the best time for wheat - sowing.秋分种麦最相宜.We used shades of gold and green to give the room a fresh, autumn...
所有零件都是用顶级高强度铝加工而成。All parts are machined from top grade, high tensile aluminium.这座楼完全是现代主义风格：采用玻璃和铝质材料，以灰色作为基调。The building is impeccably modernist: glass, aluminium and grey.铝看起来很重,实际上却很轻.Aluminium looks heavy but actua...