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The basic principle, advantage, disadvantage and the improvement for measuring liquid surface tension with different methods were described. The methods were capillary rise method, Wilhelmy plate method, pendent drop method, drop volume method, maximum bubble pressure method. The problems in the surface tension measurement of wide temperature and pressure range, the chosen of experimental methods and the development tendency of these were introduced especially in this paper.

本文着重介绍了几种液体表面张力的测定方法（包括毛细管上升法、Wilhelmy盘法、悬滴法、滴体积法、最大气泡压力法），包括这几种方法的测定原理、优缺点及改进方法，特别指出了宽温度和压力范围的表面张力测定存在的问题，实验方法的选择及表面张力测定方法的发展趋势。

The basic principle,advantage,disadvantage and the improvement for measuring liquid surface tension with different methods were described.The methods were capillary rise method,Wilhelmy plate method,pendent drop method,drop volume method,maximum bubble pressure method.The problems in the surface tension measurement of wide temperature and pressure range,the chos...

本文着重介绍了几种液体表面张力的测定方法(包括毛细管上升法、Wilhelmy盘法、悬滴法、滴体积法、最大气泡压力法)，包括这几种方法的测定原理、优缺点及改进方法，特别指出了宽温度和压力范围的表面张力测定存在的问题，实验方法的选择及表面张力测定方法的发展趋势。

Sees only the twinkling of an eye time, suffers the corrosion to change the yellow left hand outer space glove, the sudden color changes gradually black, the surface starts the crack to carbonize, this time Huang Qu senior official yellow Jinlong already obviously felt, the left hand points to the end to start to give off heat; This kind of corrosive steam has finally revealed the ominous ruthless unusual truth about the matter, this sudden gradation lets the human be virtually impossible to guard against, is following the strong corrosion permeability, before long on perish entire outer space glove outer layer and fast thorough in, Huang Qu senior official yellow Jinlong had a premonition the situation is not wonderful, wants to return to the planetoid control center immediately, in order to takes off the outer space glove under the artificial environment which this only bad luck passes goes against, because in on this high speed movement planetoid, the surface temperature may melt the steel and iron, once casts off the outer space glove, the flesh and blood constitution manpower can instantaneous burn, and can threaten human's entire life immediately!

只见一眨眼功夫，遭受腐蚀变黄的左手太空手套，突然颜色逐渐变黑，表面开始裂纹炭化，此时黄区长官黄金龙已经明显地感觉到，左手指端开始发热；这种腐蚀性蒸汽终于露出了凶狠异常的庐山真面目，这突然的渐变让人防不胜防，伴随着强劲的腐蚀渗透性，不一会儿就腐蚀掉了整个太空手套的外层并快速深入内部，黄区长官黄金龙预感到情况不妙，想立即返回小行星指挥中心，以便在人工环境下脱下这只倒霉透顶的太空手套，因为在这颗高速运行的小行星上，表面温度可以熔化钢铁，一旦摘掉太空手套，血肉之躯构成的人手就会瞬间被烤焦，并会迅即威胁到人的整个生命！

Carborundum, emery abrasive carborundum powder is applied to two kinds of dry and wet production process of the most affordable of the abrasive, especially for the more rough treatment of the workpiece surface, while the treated surface, also requested a more elaborate occasions.

金刚砂，金刚砂磨料，金刚砂微粉是一种适用于干式和湿式两种生产工艺的最经济实惠的磨料，尤其适用于对较粗糙的工件表面进行处理，而处理后表面又要求较精细的场合。

To the casting process of the cooling stave,the oxidizing mechanism of inner surface of the tube,the carburization of outer surface and their influence to the using performance of cooling stave were analyzed.

针对高炉冷却壁的铸造过程，分析了此过程中冷却水管的渗碳和内表面的氧化机理及对冷却壁使用性能的影响。

Nutlets dark brown, oblique subulate, trigonous-tetrahedral, 1-1.5 mm, shiny, usually glabrous, adaxial bottom surface prominent, 2 lateral surfaces equal, a longitudinal rib at their juncture; abaxial surface convex, ovate, acutely 3-ribbed; carpophore sharply curved.

小坚果暗褐色，斜的钻形，三棱四面体，1-1.5毫米，发亮，通常无毛，正面的底部表面突出，背面凸，卵形，尖锐3肋；果瓣柄明显地弯曲。

In order to produce high quality red Fuji apple with good surface quality,10 year-old red Fuji apple (Changfu 2)trees by pot culture were used in this trial in order to study the relationship of microenvironment and the apple surface cataclasm by the methods of shading and spraying during the fruit growth period from 2006 to 2007 in the nursery of Green Graden Ltd.of Agriculture University of Hebei.

为了生产优质果，提高红富士苹果外观品质，于2006～2007年在河北农业大学绿美园林有限公司苗圃以10a生盆栽红富士苹果为试材，品种为长富2，分别采取在果实发育期搭遮荫网适当遮荫、高温时间喷水降温等处理措施，研究了果实微域环境温湿度与红富士苹果果面碎裂发生的关系。

In co-revolution disc cavity, heat transfer coefficient which is high on most region of disc surface show that the co-revolution avails the heat transfer on disc surface.

但在出口处出现大面积"倒流"，盘腔外端的温度较高，这与流动参数和出口面积的大小有关，有待进一步研究。

With the Lagrange multiplier method , the minimum distance of the center of a circle and a quadric surface was provided and the tangency condition of curve and surface was given.

利用拉格朗日乘子法求解二次曲线和二次曲面之间的最小距离，给出了曲线与曲面相切的条件。

The combined motion of grinding the transition arc maintains that the gyration center of the arc moves along the parallel line to the surface of the grinding wheel, and the gyration center of the oxide tool moves along the vertical line to the surface of the grinding wheel.

磨削刀片过渡圆弧时，过渡圆弧的回转中心到砂轮面的距离必须恒等于过渡圆弧的半径，磨削过渡圆弧的复合运动要保持过渡圆弧的回转中心沿平行于砂轮面的直线运动；刀片的回转中心沿垂直于砂轮面的直线运动。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样