就制图的目的来说,所以需记录的高程是高出大地水准面 ( 海平面 ) 的高程.For cartographical purposes heights are necessarily recorded above the geoid ( sea - level ).较常见的是根据制图的比例来划分.More commonly the separation is based on the scale of the mapping.丁字尺 是工程...
方法:采用比色法测定制剂中醋酸泼尼松龙的含量.METHODS colorimetry was applied to determine prednisolone acetate in the nasal drops.该类药物有泼尼松和地塞米松等.Prednisone and dexamethasone are examples of corticosteroids.以泼尼松龙为原料,经氧化 、 酰化 、 水解成盐、氯甲基化成酯制得氯替泼...
It's sometimes tough to tell with the clown anemonefish ( Amphiprion percula ) due to its gender - bending ways.遇上了海葵双锯鱼,有时很难分辨得出来,因为它们的性别会换来换去的.Anemonefish swarm a healthy Manra reef in the sunwashed wilderness of ...