查询词典 PVC

The effects of Zinc stannate coated CaCO3 (ZSC-1) flame retardant on properties of PVC cable material were studied by the tests of OI, SDR, thermal property and mechanical property.

通过氧指数、烟密度等级、热性能和力学性能的测定，研究了锡酸锌包覆碳酸钙阻燃剂对聚氯乙烯电缆料性能的影响。

The metal stannate combine with Mg2 as flame-retardants and smoke suppressants for flexible poly were studied through the limiting oxygen index test smoke density test and the char yield test.

用极限氧指数、烟密度和剩炭率研究了锡酸盐和Mg2复合阻然剂对软PVC的阻燃消烟作用。

It is indicated that the perfect dispersive capacity of CaCO3 was gotten after CaCO3 was dealt with stearic acid.

研究表明：采用硬脂酸处理CaCO_3增加了CaCO_3的分散能力，填充20phr CaCO_3后PVC复合材料的冲击强度仍增加40％。

This has led to development of a series of low toxic and innoxious thermal stabilizers including mainly dust-free compounded lead salts, calcium/zinc compounds,organic stannum,rare earths,organic stibium,hydrotalcite etc.

随着环保意识的逐渐加强，传统的PVC热稳定剂如粉末状铅盐稳定剂、钡/镉类稳定剂受到了一定的限制，目前已相应地开发出了一系列低毒、无毒型热稳定剂，主要包括无尘复合铅盐类、复合钙/锌类、有机锡类、稀土类、有机锑类、水滑石类等。

Decoloring and Spectral Properties Analysis of Innoxious Ultraviolet Absorbents;2. This has led to development of a series of low toxic and innoxious thermal stabilizers including mainly dust-free compounded lead salts, calcium/zinc compounds,organic stannum,rare earths,organic stibium,hydrotalcite etc.

随着环保意识的逐渐加强，传统的PVC热稳定剂如粉末状铅盐稳定剂、钡/镉类稳定剂受到了一定的限制，目前已相应地开发出了一系列低毒、无毒型热稳定剂，主要包括无尘复合铅盐类、复合钙/锌类、有机锡类、稀土类、有机锑类、水滑石类等。

The effects of an inorganic composite flame-retardant filler, which was prepared mainly from aluminium hydroxide Al(OH_3, magnesium hydroxideMg(OH_2,calcined kaolin, nano silicon dioxide(SiO_2), stibium trioxide(Sb_2O_3), on the flame retardancy of flexible Poly Vinyl Chloride products were investigated, and an ultrafine and active inorganic composite flame-retardant filler was developed.

研究了氢氧化铝 Al(OH 3、氢氧化镁 Mg(OH 2 、煅烧高岭土、纳米二氧化硅、三氧化二锑(Sb2 O3)等组成的复合阻燃体系对软PVC电缆制品的阻燃作用，开发了一种超细活性无机复合阻燃填料。

PVC subdrainage is one kind of advanced drainage techniques developed in recent years in the world. It will have a promising future of wide application.

塑料暗管是一种新型的排水材料，具有很好的排水效果，应用前景广阔。

The N fertilizer application under PVC subdrainage suggested that theamount of N fertilizer applied and ratio of bascal fertilizer to topdressing had con-siderable influence on accumulation and distribution of dry matter yield,uptakeand distribution of mineral nutrients such as N.P.K as well as grain yield.

塑料暗管排降条件下长江下游圩区小麦氮肥运筹试验结果表明，氮肥用量及基肥与追肥比例对小麦干物质积累和分配，矿质营养元素吸收和分配，籽粒产量有显著有影响。

This paper gave the detailed reviews on previousresearch results on subdrainage home and abroad,studied the effect and mecha-nism of subdrainage facilities on drainage,waterlogging reduction,salt removeas well as nitrogen fertilizer application under subdrainage conditions by use oflysimeter experiments and field trials.Numerical modelling on water movementin heterogeneons multilayered soils as well as the optimization layout of spacingsand depths of PVC subdrain was also investigated in this paper by numerical sim-ulations.

本文在论述国内外暗管排水研究进展的基础上，采用蒸渗仪控制试验，田间试验和数学模型数值计算相结合的方法，对塑料暗管的排水、降渍、除盐效果及其机理和塑料暗管排降条件下小麦的N肥运筹进行了深入研究，并对排降条件下试区非均质分层土壤水分运动的数值模拟和塑料暗管埋深和间距的经济优化布局模式进行了探讨。

PVC subdrainage is one kind of advanced drainage techniques developed inrecent years in the world.It will have a promising future of wide application incontrolling the threat of waterlogging,reclamating the lower—yield lands and re-constructing the lands with higher and stable crop yield in the lower reach polderareas along Changjiang River.

塑料暗管排水是世界上新近发展起来的一项高科技排水技术，对防止长江下游圩区三麦渍害，改造中低产田，建设高产稳产农田具有广阔的应用发展前景。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。