natural air-crossing是什么意思

用法例句

Process on green corrosion inhibitors picking from natural propagation;

从天然动植物中提取绿色缓蚀剂的研究进展

Study on the refining technology of natural caffeine;

天然咖啡因精制工艺研究

The Activity and Their Mark of Nature and Synthetic Vitamin;

天然维生素和合成维生素的活性与标识

To explore brightening effect of nature product.

筛选具有增白作用的天然产物 ,为美白化妆品的开发提供了依据。

The article analyzes the affecting factors of nature moisture content by taking project as an example.

通过工程实例的体会,对天然含水量指标的影响因素进行了理论分析。

Research on dyeing effect of wool fiber with natural pigment in supercritical carbon dioxide;

天然色素在超临界CO_2中对毛纤维染色性能的研究

Purification and research progress on the natural pigment;

食用天然色素的纯化与研究进展

A novel equipment for extracting natural pigments:chute extractor;

新型天然色素提取设备——滑槽式浸出器

Influence of amount of sulfur on crosslinking density and structure of natural rubber characterized by nuclear magnetic resonance spectroscopy;

核磁共振法表征硫黄用量对天然橡胶交联密度及结构的影响

Co-cure of natural rubber/ethylene propylene diene monomer blends by organic peroxide system;

过氧化物体系中天然橡胶/三元乙丙橡胶并用胶的共硫化

Effect of dynamic tensile fatigue on structure and dynamic viscoelasticity of unfilled natural rubber vulcanizates;

动态疲劳对未填充天然橡胶硫化胶结构与动态黏弹性的影响

Supply and demand analysis for world petroleum industry and Chinese natural gas;

世界石油工业和中国天然气供需分析

Comprehensive evaluation method for sealing ability of mudstone caprock to gas in each phase;

泥岩盖层对各种相态天然气封闭能力综合评价方法

Division of seal evolution stages of shale caprocks to gas in each phase and its research significance;

泥岩盖层对各种相态天然气封闭性演化阶段划分及意义

Influence of technological condition on trichlorobromomethane modified natural rubber latex;

三氯溴甲烷改性天然胶乳的研究

Effect of thickening agent on heat stability of natural rubber latex;

增稠剂对天然胶乳热稳定性的影响

Study on the relation between volatile fatty acid number and electric conductivity of natural rubber latex;

天然胶乳的挥发脂肪酸值与电导率关系的探索

Production practice of substitue desulfogypsum for natural gypsum as retardant;

脱硫石膏代替天然石膏作缓凝剂的生产实践

The results show that though the waste gypsum used independent can affect the setting time and the strength of cement, the waste gypsum mixed with natural gypsum is used as cement eretarder, and the content of SO3 is controlled correctly, the qualified cement can be produced in inherent technology conditions, and the high performance concrete can be made with this cement.

研究结果表明,废石膏作为水泥缓凝剂单独使用时虽然可能会影响水泥的凝结时间和强度,但如果与天然石膏搭配使用,并控制适当的SO3掺量,就可以在原有生产工艺参数基本不变的条件下,生产出合格的水泥,而且可以配制出符合建筑工程要求的高性能混凝土。