大多数禾本科胚有一片瓣 状 结构通常称为外胚叶.Most grass embryos have a flap - like structure known as the epiblast.目的: 研究少汗性外胚叶发育不全引起先天缺牙的ED1基因突变.Objective : To detect ED 1 gene mutation in three hypohidrotic ectodermal dysplasia ( HED ) nuc...
采用矩形侧浇口、齿轮齿条脱螺纹机构.Rectangle - shape side gate and the gear - rack taking off thread mechanism were used.介绍了注塑模中一种象“香蕉”形状的曲线型潜伏式浇口的结构形式.The structure of a banana - shaped submarine gate in injection mold is introduced.浇口厚...
Your foot falls off the pedal and you stall the car.你的脚离开踏板，汽车便会熄火。He pressed down the accelerator pedal of his car.他踩下汽车的加速器踏板.She was too tired to pedal back.她太累了，没力气骑自行车回去。Some guitar players tend to overuse the wah-w...
Louts was so tired that he hit the hay soon after supper.露易丝很累,所以一吃完晚饭就睡觉去了.Not all football stars are ill-behaved louts.并非所有的足球明星都是举止粗野的人。These young louts deserve to be horse-whipped.这些粗野的小子应该用马鞭狠狠抽一顿。These young louts...
Car horns toot as cyclists dart precariously through the traffic.骑车人危险地在车流中飞速穿行时，汽车喇叭的嘟嘟声响成一片。The driver gave me a wave and a toot.司机冲我挥挥手，按了下喇叭。She gave a sharp toot on her horn.她高声按响了喇叭。...
他打着受过良好教育的幌子到处欺瞒世人。He was able to fool the world with his veneer of education.用尽一切欺瞒和阻挠的手段来避开协约国委员会的耳目.Every form of deception and every obstacle baffled the Allied Commission.倘有危难于前,必无欺瞒于世.I will listen to you, especial...