1) pulsed-field gel electrophoresis
交变脉冲电场凝胶电泳
1.
Pulsed-field gel electrophoresis and alkaline pulsed-field gel electrophoresis were used to analyzethe chromosome DNAs of Ashbya gossypii and two kinds of its mutant strains CMG and JMG,whichwere obtained by γ-ray and Helium-Neon laser irradiation,respectively.
采用交变脉冲电场凝胶电泳和碱变性交变脉冲电场凝胶电泳方法,分析了棉病囊霉酵母菌及其2个不同的突变菌株的核型,得知此菌株含有5条染色体 DNA,而2株突变体的染色体 DNA 都没有大片段的缺失或双链断裂,但其稳定性不如野生型菌株的 DNA,而且存在单链断裂等碱不稳定性位点。
2) alternation
交变
3) AC-AC frequency conversion
交-交变频
1.
This article introduces the characteristic and function of AC-AC frequency conversion vector control system used in main driving motor in the CSP finishing mill,and expatiates the basic theory of AC-AC frequency conversion vector control.
文章介绍了薄板坯连铸连轧精轧机主传动电机应用交-交变频矢量控制系统的原因和特点,阐述了交-交变频矢量控制的基本原理,是一种高性能的控制方式,在现代化生产中具有重要意义。
4) alternative load
交变栽荷
5) alternating magnetic field
交变磁场
1.
Formation and control of turbulent in metal melts purified by alternating magnetic field;
交变磁场净化金属液时金属液紊流的形成及其控制
2.
Measuring alternating magnetic field and permeability of vacuum by oscillograph;
用示波器测交变磁场及真空磁导率
3.
The study of heat effect of magnetic fluids under an alternating magnetic field;
磁流体在交变磁场中的热效应研究
6) mutative load
交变载荷
1.
This paper contains a detailed experiment analysis on the fracture section characteristic,metallographic organization,chemical consists and mechanics property of the drill-stem subs,and performs a set of analysis calculation on the mutative load which putting on the drill-stem subs.
推断出转换接头的断裂原因:在使用过程中存在选型不合理,在弯曲、拉压、扭转、冲击、振动等交变载荷的复合作用下,在危险截面产生疲劳裂纹,从而导致转换接头疲劳断裂。
2.
This paper contains a detailed experiment analysis on the fracture section characteristic,metallographic organization,chemic consists and mechanics property of a drill pipe and a set of analysis calculation on the mutative load which putting on the drilling pipe.
在弯曲、拉压、扭转、冲击、振动等交变载荷的复合作用下,在钻杆外表面的腐蚀坑底部产生疲劳裂纹,随着裂纹的不断扩展,导致钻杆腐蚀疲劳断裂。
参考词条
补充资料：脉冲电场凝胶电泳
分子式：
CAS号：
性质：用于分离大分子DNA的电泳装置。初始的设计的装置是采用交变脉冲垂直定向电场和线电极。后又有了许多改进，如周期性倒转电场，垂直凝胶的横向电肠，二极管隔离的垂直电板，钳位均匀电场以及旋转凝胶等。
CAS号：
性质：用于分离大分子DNA的电泳装置。初始的设计的装置是采用交变脉冲垂直定向电场和线电极。后又有了许多改进，如周期性倒转电场，垂直凝胶的横向电肠，二极管隔离的垂直电板，钳位均匀电场以及旋转凝胶等。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。