1) double-mainstream
双主线
1.
In the teaching mode of tax major in high vocational education,double-mainstream means tax mainstream and account mainstream,which are related to each other and form the students’ knowledge system.
高职税务专业“双主线,双模块”的教学模式中,“双主线”是税收主线和会计主线。
2) double control from time and cost
时间-成本双主线
3) the main connection of double busbar with bypass
双母线带旁路主接线
1.
Under the circumstance of the main connection of double busbar with bypass and four power incoming lines in Ningxia Tongxin substation,discusses the existing problems and implementation methods for the application of incoming line standby power automatic put-in system.
在双母线带旁路主接线下应用进线备自投的情况相对少见,在国内尚没有较成熟且较完善的软、硬件可以应用。
5) Double Primary and Back-up Protection
双主双后
6) hypoid drive pinion
主动准双曲线伞齿轮;主动偏轴伞齿轮
补充资料：主线
1.图画中描写物体必要的基本线，称为"主线";其用作补助或描写小部分的线，称为副线。主线可以单独表现某种物体，而副线不能独立。 2.指文艺作品或文章的主要脉络。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条