This article introduces a method to determine the plastic membrane tensile modulus by using a normal mart electron tensile testing machine and computers.
文章介绍了一种利用普通的智能电子拉力试验机配以计算机来计算塑料薄膜拉伸弹性模量的方法。
Advances of extrusion equipment for plastics film, including blown film lines, biaxially oriented film lines, calendered film lines and various accessories such as dies,air rings,screenchangers,melt bumps, are introduced.
介绍了近年来塑料薄膜生产设备的最新进展 ,包括挤出吹塑薄膜设备、双向拉伸薄膜设备、流延设备以及各种辅机 ,包括机头、风环、牵引、换网器等的技术进展。
When a biaxially oriented plastics film is breadthwise stretched, the distribution of the crystallizability affected by the temperature and stress will be the most important factor of the thickness distribution.
本研究主要针对的是双向拉伸塑料薄膜横向拉伸成型技术，包括对横向拉伸后的应力以及相对结晶度分布的研究。
The use of plastic film to prevent the cracking of deep drawing part;
用塑料薄膜解决深拉深件的破裂问题
Seedling technique covering with plastic film to Lalix gmelini;
兴安落叶松塑料薄膜覆盖育苗试验初报
The Feasibility of Sericulture under Plastic Film;
大蚕塑料薄膜覆盖育可行性研究
Production systems utilizing plastic mulch involve additional input costs over traditional non-plastic systems.
应用塑料薄膜覆盖的生产体系要比传统非塑料薄膜覆盖体系多投入资金。
Plastic mulch increases soil temperature in the bed which promotes faster crop development and earlier yields.
塑料薄膜覆盖提高苗床的土壤温度，促进作物较快发育并提早成熟。
Bare soil is protected from the impact of rainfall which can cause surface soil crusting, compaction, and erosion.
塑料薄膜覆盖使裸土免受降雨引起的表土结壳、压实和侵蚀。
Effects of plastic mulch on early and total yields of watermelon and muskmelon are presented （Table 2）.
表1阐明了塑料薄膜覆盖对西瓜和甜瓜的早期产量和总产量的影响。
Although mulch is used primarily for vegetable production in the United States, it is a viable concept for any crop where profitability can be demonstrated.
在美国，虽然塑料薄膜覆盖主要用于蔬菜生产，但对任何可以获得效益的作物都可行。
Plastic mulches create a barrier preventing fumigant gases from escaping to the atmosphere, thereby increasing their effectiveness.
塑料薄膜覆盖可以形成防止烟熏气体逸散到大气的屏障，所以提高烟熏气体的杀虫效果。
Although total yields of both crops benefited from mulch, the most dramatic benefit was because of the early harvest.
虽然塑料薄膜覆盖对这两种水果的总产量有好处，但最明显的收益是由于早期产量的增加。
Polyethylene blown mulch film for agricultural uses
GB13735-1992聚乙烯吹塑农用地面覆盖薄膜
An Applied Research on the Covering Technique with Plastic Film by Floating Type
浮卷法塑料薄膜苫盖技术的应用研究
a thin sheet of (usually plastic and usually transparent) material used to wrap or cover things.
覆盖在事物上面的薄层（通常是透明的塑料）。
There is some benefit under clear plastic mulch due to higher temperatures generated （solarization） than occurs with opaque mulches.
用透明塑料膜覆盖优于不透明塑料膜覆盖，因为前者能产生较高的温度（日晒作用）。
Experimental Analysis on Photothermic Property of New Style Covering Materials PETP Film for Greenhouse;
温室新型覆盖材料PETP薄膜光热性能研究
The Optical Property Research and Analyse of New Film Cladding Material
新型薄膜覆盖材料的光学性能研究及其分析
tasefully-coloured plastics,
色调高雅的塑料所覆盖，
vinyl-coated sheet
乙烯基塑料覆面薄钢板
Researching and Analyzing on the Performance and Application of the New Film Covering Materials
新型薄膜覆盖材料的性能分析及其应用效果的研究
the hard disk is covered with a thin coat of magnetic material.
硬盘被一层薄薄的磁性材料覆盖着。
automatic plastic bag film seaming and cutting machine
塑料薄膜袋自动封剪机