Prewetting of coal seams by water infusion is an essential measure for dust control at working faces.
煤层注水预湿是采煤工作面防尘的治本措施,添加湿润剂是改善煤层注水效果的重要途径。
The time-dependent height,wetting radius and contact angle of the droplet were measured.
实验测量了液滴高度、湿润半径和接触角随时间的动态演化。
An experimental system,composed of a liquid tank,a solid thin plate,a step-motor,a CCD camera connected with stereoscopic microscope,a high-speed image acquisition card,and a computer,was utilized to investigate dynamic wetting behavior of silicone oil on glass,aluminum and stainless steel surfaces and understand the effect of the solid surface properties on the dynamic wetting behavior.
利用精密步进电机、高速CCD图像采集系统、立体显微镜,采用液槽法测试硅酮油在玻璃、铝、不锈钢表面上的动态湿润行为。
This investigation characterized the wettability and adhesive properties of the major soy protein components conglycinin (7S)and glycinin( 11S)after urea modification and found out the secondary structures playing key roles on the adhesive strength of 7S and 11S proteins after modifying with urea.
随着人们对环境保护意识的增加和地球有限资源的缺乏,大豆蛋白在胶粘剂工业中的应用也越来越显示出强大的吸引力,鉴于前人的研究成果,文章研究了大豆7S和11S球蛋白经过尿素变性后在松木、樱桃木和胡桃木上的粘接强度和湿润能力。
The law of effect of wetting agent and adhesion agent mixed with concrete, and magnetic water substituted for ordinary mixing water, on main performance of compressive strength, fluidity and setting time of concrete is studied by using orthogonal experiment and variance analysis.
利用正交试验和方差分析研究了湿润剂、增粘剂掺入混凝土内,磁化水代替普通拌合水对混凝土的抗压强度、流动性和凝结时间等主要性能的影响规律。
Adding of wetting agent is an important approach for improving water infusion.
煤层注水预湿是采煤工作面防尘的治本措施,添加湿润剂是改善煤层注水效果的重要途径。
Based on the definition of desertification from the United Nations Convention to Combat Desertification,the potential extent of desertification in China was revised by employing Thornthweite's and Penman's formulae to calculate humidity index using the records of 671 meteorological stations from 1950 to 1990,and the biogeographical features of the climate types were clarified.
为了客观反映中国荒漠化发生区域,按照联合国防治荒漠化《公约》的定义,利用1950—1990年间全国671个气象站的长时间序列气象数据,分别采用Thornthwaite和Penman计算可能蒸散量的方法计算了湿润指数的分布,然后根据中国气候区划和中国植被区划以及中国荒漠化发生的特点等对计算结果进行了调整,对中国荒漠化潜在发生范围进行了修订,明确了荒漠化各气候类型区的地理涵义。
Kira′s warmth index(WI),coldness index(CI)and XU′s humidity index(HI)of 112 dominants and main companions have been calculated.
根据中国亚热带常绿阔叶林区域的气象资料和植物分布资料,利用Kira的温暖指数(WI)和寒冷指数(CI)及徐文铎从中变化出的湿润指数(HI)计算了中国亚热带常绿阔叶林112个优势种及常见种的水热指标值,分析了树种分布与气候的关系,并将优势种及常见种划分为5个Kira水热指标分布类群,它们是:G1低温半湿润型,G2低温湿润型,G3低中温湿润型,G4高中温湿润型,G5高温湿润型。
The Earth s surface humidity index is able to objectively reflect the conditions of water-heat balance,and a fine indicator to judge aridity or wetness of the climate in a certain area.
地表湿润指数能较客观地反映某一地区的水热平衡状况,是判断某一地区气候干旱与湿润状况的良好指标。