DNA交链主要由照射于DNA或细菌芽胞引起.DNA cross - links are produced mainly upon irradiation of dry DNA or bacterial spores.目的: 探讨互隔交链孢霉诱导 食管癌 的发生机制.Aim : To study the mechanism of esophageal cancer induced by alternaria ( AOH ).硼砂是一种交链...
钓鱼竿上的绕线轮a reel on a fishing rod贝德的钓竿已经裂了, 而蒙德的绕线已经损坏了.Baker's rod is splintered , and Mond's reel is out of fix.钓丝缠到绕线轮上,乱得理不出来.The fishing line was hopelessly snarled on the reel....
等能量 、 等变形夯扩挤密矸石桩是一种地基加固新技术.Practical construction shows that equal energy, equal deformation tamping a.文章介绍了气动夯锤打桩的施工方法.This paper presents the construction method of pneumatic rammer piling.针对一台液压夯管锤,通过改变其供油压力,考察了其工作参数的...