Water soluble hydroxypropyl � � cyclodextrin was converted to acetonyl hydroxypropyl � � cyclodextrin via selective oxidation. 通过选择性氧化,将水溶性优良的羟丙基β环糊精转化为丙酮基羟丙基β环糊精.
The third clause of the contract specifies steel sashes for the windows.合同的第三款指定使用钢窗.The officer wears sashes on his shoulders.这名军官的肩上佩戴着肩带.Our windows have double - pane sashes.我们的窗户有 双层 的玻璃窗框....