A proton is an elementary particle of matter.质子是物质的基本粒子。An electron has a negative charge, a proton has a positive charge.电子带负电荷, 质子带正电荷.The hydrated proton has been included in the calculations as one ion.水合质子作为一种离子包括在计...
镰状细胞病患者是否有更高的感染机会?Are patients with sickle cell disease at greater risk of infection?止血带能否用于镰状细胞病患者?Can tourniquets be used in patients with sickle cell disease?镰状细胞紊乱 、 镰状细胞病和镰状细胞性贫血之间有何差异?Is there a difference between ...
A sharp overhang of rock gave them cover...一块凸出来的尖利岩石成了他们的避身之所。These restored houses overhang a system of quiet canals.这些修葺一新的房屋俯视着静静流淌的运河河网。A sharp overhang of rock gave them cover.一块凸出来的尖利岩石成了他们的避身之所。Let the pastry ove...