The source is made of semiconductor laser, collimating and coupling system, narrow pulse driving circuit.光源包括半导体激光器 、 准直耦合元件和窄脉冲发射驱动电路.Using video - cam directly collimating on computer screen, it is convenient to operat...
只有4种: 腺嘌呤 、 胸腺嘧啶 、 鸟嘌呤和胞核嘧啶.There are just four kinds: adenine, thymine, guanine and cytosine.摘要采用 反相 高效液相色谱法测定不同生境半夏和炮制半夏中鸟嘌呤核苷的含量.Guanosine contents of Pinellia Rhizoma in the different habitats and the processed were ...
Microbial inoculum could enhance microbial community functional diversity and evenness degree.接种菌剂提高了微生物群落功能多样性和群落均匀度.Sterile cotton - tipped applicators in individual glass tubes conveniently used to obtain inoculum dur...
Deposits of plaque build up between the tooth and the gum.牙齿和牙龈之间会滋生牙斑。I was in agony with tooth ache.我牙疼极了.Objective : To study the stress tooth preparation with two kinds of porcelains.〔摘要〕目的: 研究瓷贴面复合体应力分布规律.The dentis...