The pumps must be of the low shear Archimedes screw type.泵必须是低剪切力的阿基米德螺旋式泵.These results parallel Archimedes'geometric theorems.这些结果可与阿基米德斯的几何定理相比.Archimedes flourished in the 3 rd century B.C.阿基米德活跃于公元前三世纪;阿基米德是公元前...
In addition to natural rivers, the Chinese working people have dug many canals.除了天然的河流之外, 中国劳动人民还开挖了许多运河。The KR 700 is the lastest addition to our range of fax machines.KR700是我公司传真机系列中的最新产品The addition of hydrogen bromid...