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21. Control of lodging in small plot research can be accomplished by mechanical means in most all crops, and via chemical applications in some crops.
防止试验小区内的倒伏,大多数作物可用机械方法,有些作物必须采用化学方法。
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22. After the short-cut nitrification was realized, chemical dosage could be saved and short-cut nitrification maintained by means of changing the chemical dosing method.
当短程硝化反应实现后,通过改变投药方式可节省投药量并维持短程稍化反应。
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23. The activity of natural anhydrite was effectively activated and the hydraulicity increased by means of increasing fineness of raw materials as physical method and using proper activating agent as chemical method.
采用提高原料细度的物理方法和选用合适激发剂的化学方法,使天然硬石膏的活性得到有效激发,并使其水硬性有所增强。
-- 来源 -- dict.cnki.net 好评(10) 差评(0)  
 
24. The chemical process by means of which a change in physical condition, as in pressure or temperature, or the action of a solvent causes a molecule to split into simpler groups of atoms, single atoms, or ions.
离解(作用)在物理状态下,如在压力或温度下的变化,或在溶剂的作用下,使分子分离为更简单的一组原子、单原子或离子的化学过程
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25. By means of the combination of gray relation analyses and computer, efficiently control of chemical reaction was achieved.
通过灰色关联分析法与计算机的结合能够有效地控制化学反应。
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26. A causal diagnosis is conducted on the yellows of Machilus thunbergii by means of the soil-plant chemical analysis, enzyme diagnosis, and field experiments, which grow in the saline-alkali soil at Zhujiajian Nursery Stock Base.
摘要采用土壤植物化学分析、酶学诊断和田间试验对舟山市朱家尖苗木基地盐碱地土壤红楠黄化成因进行了研究。
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27. By means of the chemical composition analysis, mechanical property testing and macro-microstructure examination, EFM calculation and vibration testing, materials and working process are analyzed comprehensitly.
采用化学成分分析、力学性能测定、宏、微观检验、有限元应力计算及振动测试等方法对再沸器的材料、加工工艺和工作状况进行了综合分析。
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28. In this paper, by means of macro-morphology inspection, chemical composition analysis, microstructure examiation, mechanical property testing and X-rays diffraction analysis, the fractured bolt and random sample bolt were analyzed.
摘要采用断口宏观形貌观察、化学成分分析、显微组织检验、力学性能则试及腐蚀产物的X射线衍射分析等手段,对断裂与部分抽检的卡瓦螺栓进行了综合试验分析。
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29. Adjustment of the positioning of the binder molecules is feasible by means of site-directed immobilization via chemical modification of the carbohydrate chain(24,28,29).
结合物分子位置可以用经碳水化合物链的化学修改的定点固定化方法来调节。
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30. It was analyzed by means of metallographical examination, chemical composition analysis and inclusion testing, the results show that the fracture was mainly caused by no-metallic inclusion.
通过对层裂坯料进行宏、微观检验、化学成分和夹杂物分析,认为大颗粒硫化物夹杂及其富集破坏了基体的连续性,是镦制过程中产生裂纹的主要原因。
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