And the rotation age at the 8th to 13th years was reasonable for coppice forest management of black locust.

The results showed that no benefit would be derived from black locust coppice forest with a rotation age beyond 20;

研究结果表明；以20a以上的轮伐期经营刺槐萌生林在经济上是不合算的；

Preliminary study on Coppice Forest of Robinia pseudoacacia

刺槐萌生林的初步研究

Various factors affecting the slow-crack-growth ( SCG) resistance of ethylene copolymer ( denoted as polyethylene below) pipes were investigated, including the content, type, and their distribution on the backbone of the comonomers, as well as the molar mass of polyethylene.

研究了共聚单体的种类、含量以及相对分子质量、共聚单体支化链在主链上的分布等因素对聚乙烯管材料抵抗慢速裂纹扩展（SCG）性能的影响。

Results indicate that the addition of right amount of PBT with low viscosity, ethylene copolymer A, rosin ester A and rosin ester B could improve the flowability of the composites to some extent without loss of their good mechanical properties and flame retardancy.

结果表明，适量加入低粘度PBT、乙烯共聚物A、松香酯A、松香酯B可使体系在保持综合性能较好的前提下，流动性能得到不同程度的改善。

A kind of vinyl acetate ethylene copolymer emulsion was prepared. With a viscosity range from 3 300 to 4 500 mPa · s.

介绍了一种粘度在3300～4500mPa·s之间的醋酸乙烯-乙烯（VAE）共聚乳液的工艺制备方法。

Production and Market Prospect of Vinyl Acetate-ethylene Copolymer Emulsion

醋酸乙烯-乙烯共聚乳液的生产及市场前景

The toughening effects of ethylene copolymer elastomer on polypropylene ( PP)/ linear low density polyethylene ( LLDPE) blends were studied.

研究了乙烯共聚物弹性体对聚丙烯/线型低密度聚乙烯（PP/LLDPE）共混物的增韧作用。

Toughening Effect of Ethylene Copolymer Elastomer on PP/ LLDPE Blend

乙烯共聚物弹性体在PP/LLDPE共混物中的增韧作用

The high oil-absorbing resin made of crosslinked copolymer of wood fibre and cetyl methacrylate was prepared by suspension polymerization method.

采用悬浮聚合法合成了木浆纤维素交联聚合复合高吸油性材料，测定了所制备的复合高吸油性材料吸油性能指标。

Study on the Properties of High Oil Absorption Resin Consisting of Crosslinked Copolymer of Wood Fibre

木浆纤维素交联聚合复合高吸油性材料性能研究

Ordered oxadiazole-imide copolymer fibre

有序的恶二唑-亚胺共聚纤维

Acrylonitrile-casein graft copolymer fibre

丙烯腈-酪蛋白接枝共聚物纤维

The alternate copolymer of methyl vinyl ether and maleic anhydride ( PMVMA) was synthesized by using solution radical copolymerization.

采用溶液自由基共聚合方法，合成了甲基乙烯基醚（MVE）与马来酸酐（MAN）的交替共聚物（PMVMA）。

Here, we discussed three diblock copolymer systems in strong, intermediate and weak segregation limits, respectively.

本论文中，分别考虑了处于强、中度和弱相分离限的三种本体柱状结构体系。

Two diblock copolymer self-assembly under different architecture confinement

两嵌段共聚物在不同形状受限下的自组装行为环状三过氧烷引发的嵌段共聚物合成与表征

Monte Carlo Simulation on the Morphology of Diblock Copolymer Melts Containing Solid Particles

含固体颗粒嵌段共聚高分子熔体微相结构的Monte Carlo模拟

The molecular weight distributions of diblock copolymer are narrow.

该反应具有明显的活性特征，得到的嵌段共聚物分子量分布较窄。

Dissipative Particle Dynamics Simulation on the Meso-scale Structure of Diblock Copolymer Film

双嵌段共聚物薄膜介观结构的耗散粒子动力学模拟

Investigation of pp-epr diblock copolymer as compatibilizer for pp/ ept blend

PP-EPR二嵌段共聚物作PP/EPT共混增容剂的探讨

Monte Carlo simulation study on the symmetric diblock copolymer self-assembly under cylindrical confinement.

使用Monte Carlo方法模拟研究对称的二嵌段共聚物在纳米圆孔内的自组装相行为。