化合物庚烷的主要用途是作为双基推进剂的增塑剂.The heptane compound has a primary purpose as a plasticizer for doublebase propellant systems.正庚烷异构化的难点在于高选择性地生成多侧链异庚烷和抑制异庚烷的裂化反应.However, it is difficult to produce multi branched i heptane and re...
我发现当我们的目光相遇时，我本能地还以微笑。I found myself smiling back instinc-tively when our eyes met.这位大人凝视的目光离开火苗，与上校的目光相遇。The Monsignor turned his gaze from the flames to meet the Colonel's.他们1956年相遇，那时他们俩都还是小男生。They met up in 1956...
lingual studies语言研究a lingual blood vessel舌血管Over here, they're not even lingual.在这, 他们甚至什么话都说不来.One day she saw his bi - lingual name cards and howled with laughter.一天,她看到了他的双语名片,哈哈大笑.Casting clasp between teeth ( C...