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- Study on corn no-till planting mode of double ridge mulching "one film used for two years" on dryland 旱地玉米双垄全膜覆盖"一膜用两年"免耕栽培模式研究
- double ridge mulching 双垄全膜覆盖
- A Preliminary Report on Ditch Sowing Maize in Double Ridge Mulched with Plastic Films and Irrigated with Rain-collection in Dryland 旱地玉米双垄全膜覆盖集雨沟播补灌试验初报
- After changed into short sunshine in double ridge stage,the variety J30sensitive to photoperiod didn’t tassel. 二棱期转短日照后,光周期敏感型品种J30未能抽穗。
- The TRL calibration was completed using 10 error correction models in the vector network analyzer.The accurate measurement of double ridge waveguide device was realized. 最后利用网络分析仪的10项误差修正原理完成了脊波导的TRL校准，实现了脊波导器件微波参数的准确测试。
- No-tillage Cultivation Techniques of Ditch Sowing Maize in Double Ridges Mulched with Plastic Films Reused in Second Year 旱作玉米双垄全膜覆盖沟播一膜两年用免耕栽培技术
- Abstract: The design requirement of TRL calibration kit is discussed in this paper.The dimensions of the calibration kit for double ridge waveguide were designed according to calibration theory. 摘 要: 本文首先讨论了矢量网路分析仪TRL校准技术对校准件的要求，并根据校准原理设计出了脊波导TRL校准件的尺寸。
- The water harvesting area is a ridge mulched with plastic film and even small rain can easily run down planting area,so soil moisture in planting area can be improved greatly. 本试验所采取的措施使施肥量和水分同时得以改善，而不同降雨年型增产幅度差异较大，这表明该地区水分是影响作物产量的主要因素。
- Study on TRL calibration method for double ridge waveguide 脊波导TRL校准技术的研究
- Structural Design and Machining Technology of a Double Ridge Horn 双脊角锥喇叭的结构设计和工艺加工
- The eigenvalues and cut-off wavelengthes of double ridged waveguide are computed and analyzed by Finite Element Method(FEM). 本文主要运用电磁场有限元方法来分析计算脊波导的特征值以及截止波长。
- whole plastic-film mulching on double ridges and planting in catchment furrows 全膜双垄沟播
- He is working double tides to finish his essay. 他日夜苦干，赶写他的文章。
- A universal computer program has been developed to analyze different kind of waveguides ,which include symmetry and dissymmetry,single ridged and double ridged waveguide,and rectangle waveguide. 编制了一个计算各种对称和不对称单脊、双脊波导和矩形波导特征值的通用程序,并提出了一种简单的强加边界条件方法。
- I do not realize it is a double feature. 我原先不知道这是双片连映。
- Double agents live in a perpetual state of fear. 两面派永远过着提心吊胆的生活。
- I want a double room with a view. 我要一间能看到风景的双人房间。
- He was so fat that he had a double chin. 他胖得有双下巴了。
- The carpet is too thick to double up. 这地毯太厚没法折叠。
- Is the material single width or double width? 这幅料子是单幅的还是双幅的？
