Results In normal fetus, the urorectal septum ( URS ) descended, its distance to cloacal membrane decreased gradually.结果 泄殖腔发育过程中,胎龄15d前 的正常鼠胚, 尿直肠隔将 泄殖腔 分为腹侧的尿生殖窦和背侧的直肠两部分, 二者共同相通于泄殖腔管....
I was surprised by his preparedness to break the law.我对他打算以身试法感到惊讶。Preparedness ensures security ; unpreparedness invites disaster .有备才能无患,无备必定 吃亏.Everything was in a state of preparedness.一切都准备了....
Semiconductors containing such impurities are called p - type semiconductors.含有这类杂质的半导体叫做P型半导体.It is not possible to name any particular conductivity at which metals end and semiconductors begin.不可能说出在哪个特定的导电系数处是金属和半导体的分...
Artistically, the photographs are stunning.从艺术角度来说，这些照片精美绝伦。Bratby's grandfather had been artistically inclined.布拉特比的祖父很有艺术天分。The book is beautifully printed and artistically bound.这本书印刷精美,装帧高雅.America is the most i...