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The development of a two-component elastic polyurethane sealing material for the anti-seepage of channel is described herein, and then the performed polymer structure, the molar ratio of iaocyanate to hydroxide radical and the effects from the components
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摘要介绍了一种用于管道防渗止水的双组分聚氨酯弹性密封材料的开发,并讨论了基剂预聚体聚合物结构、异氰酸酯和羟基的摩尔比以及复合固化剂组分对材料性能的影响。 |
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The development of agriculture made the first economic barycenter's appearance and it's moving.
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农业开发促成了中国古代第一个经济重心区域的形成和后来的几次移动。 |
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The development of agriculture marked the beginning of the Neolithic era.
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农业的发展标记了新石器时代的开端。 |
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The development of an atypical Hirnantia-brachiopod Fauna and the onset of glaciation in the late Ordovician of Gondwana / Owen E. Sutcliffe ... [et al.].
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冈瓦纳古陆晚奥陶统一个典型的赫南特贝属-腕足动物群的发育和冰川作用的开始. |
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The development of an economical artificial heart is only a few transient failures away.
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只消再经过几次失败,就能造出价格低廉的人工心脏了。 |
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The development of animal husbandry and feed industry need a large number of high talent who know well the system of industry of Animal husbandry and Animal feed production and rule and law of correlation with animal production, have a better capability o
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摘要畜牧业和饲料工业发展需要有一大批熟悉畜牧业産业化体系和国家有关法规,具有较强的企业管理与市场营销能力,具有较强科技创新与实践技能高级科技人才。 |
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The development of automatic ammunition handling systems enabled large calibre guns to develop remarkable rates of fire.
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自动供弹系统的研制成功大大提高了大口径火炮的射速。 |
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The development of biotechnology opened more ways for the improvement and breeding of Chinese date germplasm resources.
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摘要生物技术的发展为枣种质资源的研究、创新及新品种培育提供了更多的途径。 |
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The development of burner and the relevant theory are presented.
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摘要简要叙述了煅燃烧器的发展历史,以及相应的理论成果。 |
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The development of catalytic SCWO is introduced in detail, and the catalysts, influencial factors, conversion, mechanisms and kinetics are discussed at the same time.
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主要介绍了含酚废水催化超临界水氧化技术的进展,讨论了催化剂、影响因素、转化率、机理用动力学等方面的内容。 |
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The development of coatings industry, the relationship between coatings and environmental protection, and the regulations related to volatile organic compounds (VOC) released from solvent-borne coatings are reviewed.
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摘要回顾了涂料工业的发展历史,介绍了现代涂料工业的发展现状,以及有关限制涂料中挥发性有机化合物(VOC)排放的法规。 |