As regarded its origin there were various explanations, all of which must necessarily have been conjectural.至于其来源,则有着种种解释, 当然都是些臆测.Theories about the extinction of dinosaurs are still highly conjectural.关于恐龙灭绝的理论仍然是带有很强的...
This microscope magnifies 40 diameters.这台显微镜能放大40倍.This version of the Digges telescope magnifies images 11 times.这种型号的迪格斯望远镜可将图像放大11倍。This version of the Digges telescope magnifies images 11 times...这种型号的迪格斯望远镜可将图像放大11倍...
About can at beautifying hair coloring cause canceration to human body really?有关于美发染色真的能对人体造成癌变 吗 ?It has the functions of eliminating toxin , beautifying skin , delaying ageing and balancing oil secretion.具有排毒养颜 、 延缓衰老、...
The Valley of Vinales is a lush and fertile valley and one of Cuba's finest beauty spots.比尼亚莱斯谷草木繁茂，土地富饶，是古巴最美的风景胜地之一。Irregularly shaped brown or blue spots in the nail bed can be melanomas.甲床上不规则的棕色或蓝色点可能是黑索瘤.Secur...
The forebody design a key issue for hypersonic airbreathing vehicle.前体设计是吸气式高超声速飞行器设计的关键之一.It would reach hypersonic speeds -- five times the speed of sound.也就是说,要使飞机达到特超音速—即音速的五倍.hypersonic aerodynamics高超音速空气动力学rarefied...