The use of silicone polymer material substitution of oil polymer material, is to explore a low-carbon, one important way of circular economy.
用有机硅高分子材料替代石油高分子材料，是探索实现低碳、循环经济的重要方法之一。
The result showing that this method is more flexible and adaptable than traditional categorization method, it is an effectual approach in the study of tobacco raw material substitution.
结果表明此方法比传统分类方法具有更好的灵活性与适应性，是一种研究烟叶原料替换的有效方法。
Substitution of critical raw materials in, for example, electronics and power tools also offers excellent opportunities for finding solutions for raw material problems.
关键原料的替代，譬如在电子和电动工具方面，也为解决寻求原材料难题提供了绝佳的机会。
The surface aesthetic feeling of substitution material and the wood substitution radio is increased with using the hot stamping technology in practice.
在此基础上研制热转印设备，将热转印技术应用于实践，增加了替代材料表面美感，提高对木材的替代率。
Such endeavor promoted the substitution of the traditional and unidirectional linear economy for the material closed-loop flow circulation economy having material circulation utilization as its core.
这种努力促使以物料循环利用为核心、物质闭环流动型的循环经济，取代传统的、物质单向流动的线性经济。
Bamboo is a very good fiber raw material for paper industry, it can be used as the substitution of imported hardwood pulps to produce various paper grades.
竹子是优良的制浆造纸中长纤维，多年生产实践证明，竹浆能替代进口阔叶木浆配抄上百种中高档纸张。
The five quinazoline compounds were prepared by using 2 amino 4,5 dimethoxy benzoic acid as original material, which underwent ring closing, halogenation and substitution.
方法：以2氨基4 ，5二甲氧基苯甲酸为原料，分别经过环化、氯代、取代等反应，合成了五种目标化合物。
Calcium acid phosphate as bioactive material has bone conductibility, and has been commonly used in substitution and padding of clinical bone defect.
磷酸钙盐作为生物活性材料具有骨传导性，已广泛应用于临床骨缺损的替代和填充。
The problem is decomposed into a two-level optimization problem by constraints substitution introduction of functions of batch sizes and relaxation of material balance constraints.
通过约束变换、引入操作批量的函数和松弛物料存贮能力约束，将调度问题分解为一个两层次的优化问题。
From 2, 6-dichloropyridine as starting material, we can get the target molecule through nitration, substitution, reduction, cyclization, oxidation etc.
以2,6 -二氯吡啶为原料，通过硝化，取代，还原，环化，氧化等几步反应可得到目标化合物。
The key points in the substitution of the material made in China for that made abroad in the piping engineering were discussed in this article.
探讨了在工程项目配管选材中，用我国材料标准替代国外材料标准时，应注意的问题。
Moreover, on the basis of digestion of imported technology and substitution with domestic material, design improvement and application of some key components are also introduced.
另外，在吸收消化引进国外技术基础上，结合国产材料代用，介绍几种关键部件的改进设计和应用。
The substitution of Pr for partial Nd has no obvious influence on the magnetic properties, which can lower the material price, so it is very favorable for industrialization.
用部分镨替代钕对磁性能的影响不大，但可以降低材料的价格，这对于产业化生产非常有利。
Objective: To explore the methods and evaluate the effects of acellular tissue substitution material in the reconstruction of oral mucous membrane.
目的：探讨脱细胞组织补片修复口腔黏膜缺损的方法及疗效评价。
METHODS Cefsulodin was prepared, taking phenylacetic acid as the starting material, followed by sulfonation, resolution, acylation, amidation and substitution, in 5 steps totally.
方法以苯乙酸为原料，经磺化、拆分、酰化、酰胺化和取代五步反应合成头孢磺啶。
Tourmaline is a kind of gem material with complex structure, composition and isomorphous substitution, which resuslt in diverse types and colors of this gem.
辐照处理是碧玺颜色改善很重要的一种方法。
Tourmaline is a kind of gem material with complex structure, composition and isomorphous substitution, which resuslt in diverse types and colors of this gem.
辐照处理是碧玺颜色改善很重要的一种方法。
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