1) two-step casing
两级跟管
1.
According to the requirement of curtain grouting test in deep alluvium of Huangjinping hydropower station,research was made on highly-difficult technology of drilling with 76m long case,and the borehole structure with two-step casing was put forward.
结合大渡河黄金坪电站深厚覆盖层帷幕灌浆试验项目需要,对深厚覆盖层跟76 m深套管护壁钻进这一高难度技术进行攻关研究,并提出两级跟管的钻孔结构,圆满实现了试验灌浆孔非灌段跟76 m深套管的目标,为今后类似工程跟管施工提供了重要的参考借鉴作用。
2) two level tracing sensors
两级跟踪传感器
1.
Analyzing the characteristics of tracing devices being used in kinds of solar generation systems, a tracing device—two level tracing sensors is .
论文分析了太阳运行规律和跟踪装置各种可能的工作状态，在综合分析目前各种太阳能发电系统跟踪方法特点的基础上，提出了两级跟踪传感器方案。
4) multi-casting drilling
多级跟管钻进
1.
Application of multi-casting drilling to engineering investigation of Gongzha landslides for Suwalong Hydropower Station
多级跟管钻进工艺在苏哇龙水电站贡扎滑坡体工程勘察中的应用
5) two-gradation teaching management
两级教务管理
1.
Combined with long-term timetabling experience,the paper illustrates simple and effective timetabling algorithm based on two-gradation teaching management.
结合多年的排课经验,基于校、院两级教务管理模式和减小教室流动性,提出了一种简单有效的排课算法。
6) two-level management of college and department
院系两级管理
1.
In order to adapt to the development demand of marketization,higher vocational schools should fully inspire the vigor of two-level management of college and department,carry out low-cost dynamic objective-management,etc.
为适应市场化发展需要,高职院校应充分激活院系两级管理活力,实现低成本动态目标管理,以管理决策科学化推动学院可持续发展。
补充资料：两级文氏管煤气清洗设施
两级文氏管煤气清洗设施
两级文氏管煤气清洗设施
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