The players strutted and posed for the cameras.运动员昂首阔步，摆好姿势让记者拍照。Peacocks strutted on the lawn.孔雀在草坪上神气活现地走来走去.A pigeon strutted along the roof, cooing rhythmically.一只鸽子沿着屋顶大摇大摆地走, 有节奏地咕咕叫....
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...
They found volatilization of dieldrin tended to decrease as bulk density increased.他们发现狄氏剂的挥发常随紧实度的增加而减低.Dieldrin is related to aldrin, and its toxicity to earthworms is similar.狄氏剂与艾氏剂有关,对蚯蚓的毒性是相似的....