1.a business letter with a supplemental enclosure.
带有补充附件的商业
2.The optical rotation detector was a perfect supplemental tool for chiral chromatography,which could provide the right information about dextrorotatory and levorotatory enantiomers.
单纯的紫外检测器相比,旋光检测器可方便地得到手性对映体的左旋或右旋特性。
3.Shanghai KoBo is one provider focused on high grade ironware and metal products in vessels. We play important role in the supplemental service of shipbuilding industry with rich experience.