I flunked math in second grade.我二年级时数学不及格。He flunked out ( of college ) last year.他去年 ( 从大学 ) 退学了.I'd like to thank the two professors who flunked her.我倒要谢谢那两位给她不及格的先生....
甲基二乙醇胺(MDEA)是气体净化工艺中使用的主要醇胺之一.MDEA is one of the major alcohol amines for gas purification process.结果表明:醇胺类助剂加入复合物后显著改善其力学性能.The experiments show that ethanolamine additives added to the composites improve their mechanic...
Thickening and perivascular lymphocytic cuffing of cord blood vessels . H and E X 250.脊髓血管增粗;脊髓血管周围可见淋巴细胞浸润,形成一层套膜(苏木精-伊红染色,原始放大倍数X250倍).In 1990 the agency allowed laser cuffing of soft tissue such as gums.1990年,这个机构允许使用...