地衣是一类独特的生物有机体,其体内合成了多种特殊的次生代谢产物,主要为缩酚酸、缩酚酸环醚 、 缩酚酮、二苯并呋喃等类化合物.A lot of secondary metabolites such and were produced by lichens, a class of unique organisms....
Any two diameters of a circle intersect each other.圆周内两直径必相交.Idear for deburring and polishing inside diameters of pipe and tubing.理想的用于管、孔内壁的去毛刺、抛光和难以到达处的打磨抛光.This microscope magnifies 40 diameters.这台显微镜能放大40倍.The micro...
Anticipating that it would soon be dark, they all took torches.他们预见到天快黑了, 就都带上了手电筒.We are not anticipating that there will be much trouble.我们不期望将有许多麻烦.They are cowardly, and are always anticipating danger.他们胆小怯懦, 总是提防着危险...
The film evokes chilling reminders of the war.这部电影使人们回忆起战争的可怕场景。The real picture is more horrific and stronger but one must conjure up all the associative thoughts and emotions it evokes.真实的画面更恐怖也更震撼，但是它带来的种种感受和情绪需要你自己去联...
CPSIA已禁止出售含有邻苯二甲酸盐的玩具.The CPSIA law has made it illegal to sell toys containing phthalates.同常规净水剂相比,二硫代氨基甲酸盐具有除油效率高的特点.DTC water clarifiers are featured by their high oil removing capacity.在碱存在下, 能水解生成甲酸盐.In the presence...