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The polishing fluid is composed of Al2O3 micropowder with a grain diameter of 0.5-1.0 mum, coal oil, lard, plant oil and spindle oil, wherein Al2O3 micropowder is abradant, coal oil is solvent, the mixing liquid of lard, plant oil and spindle oil is as additive; and the polishing fluid is prepared by a mixing liquid which is composed of 2% lard, 2% abraser, 8% plant oil and spindle oil by volume and 88% coal oil. The polishing fluid can produce the H62 brass element with a uniform surface quality and a good surface roughness value up to 0.008 mum, has the characteristics of no eroding elements, effectively relieving mechanical score, good processing surface quality and can be used for decoration of the plastic metal material and surface polishing process before the material metallographic microscope analysis.

抛光液由粒径为0.5～1.0μm的Al 2 O 3 微粉、煤油、猪油、植物油和锭子油混合而成；其中Al 2 O 3 微粉为磨料，煤油作溶剂，猪油、植物油和锭子油的混合液作添加剂；抛光液按体积比由2％的猪油、2％的磨料、8％的植物油和锭子油的混合液、88％的煤油配制而成；该抛光液能够加工出表面质量均匀，表面粗糙度值达到0.008μm的H62黄铜工件，具有不腐蚀工件、有效缓解机械刻划作用、加工表面质量好的特点，可以用于塑性金属材料的外观装饰性加工，以及材料金相分析前的表面抛光加工。

The acceleration of gravity is inversely proportional to the contact angle, and proportional to the surface energy when magnetic field intensity are equal.

接触角测量结果表明，几种表面对3种测试液体的接触角及表面能的变化趋势基本一致；强磁效应使得官能团修饰的钛合金表面接触角降低，表面能提高；磁场强度相等时，重力加速度与接触角呈反比关系，与表面能呈正比关系。

While the adsorptions of 1-propanol and 1-Br-propane at 100℃ give rise to 1-propoxy species, which mainly converted to propanal at higher temperature. IR spectrum arising from the interaction of propene with the catalyst at 100 ℃ shows the IR bands of allyl alcoholate and isopropoxy species. As the temperature was increased to 150℃, the bands ascribable to the adsorbed acetone and acrolein were observed. Based on these results, it is suggested that isopropoxy species is one of the intermediates for SOP to acrolein over MoPO/SiO〓 catalyst.

2原位IR光谱实验结果表明：200℃时丙烷/O〓混合气在催化剂表面吸附后的IR谱与同温度下异丙醇吸附的IR谱相似，均检测到吸附态丙酮物种和丙烯醛物种的IR谱峰；溴代异丙烷和异丙醇在催化剂表面吸附后均转化为异丙氧基，异丙氧基主要转化为丙烯和丙酮，丙烯进一步转化为丙烯醛；溴代正丙烷和正丙醇在催化剂表面吸附后均转化为正丙氧基，正丙氧基主要转化为丙醛；丙烯在催化剂表面吸附后转化为σ-氧烯丙基和异丙氧基，升温后σ-氧烯丙基转化为丙烯醛而异丙氧基转化为丙酮。

While the adsorptions of l-propanol and 1-Br-propane at 100 癈 give rise to 1-propoxy species, which mainly converted to propanal at higher temperature. IR spectrum arising from the interaction of propene with the catalyst at 100 癈 shows the IR bands of allyl alcoholate and isopropoxy species. As the temperature was increased to 150 癈, the bands ascribable to the adsorbed acetone and acrolein were observed. Based on these results, it is suggested that isopropoxy species is one of the intermediates for SOP to acrolein over MoPO/SiO2 catalyst.

原位IR光谱实验结果表明：200℃时丙烷／O_2混合气在催化剂表面吸附后的IR谱与同温度下异丙醇吸附的IR谱相似，均检测到吸附态丙酮物种和丙烯醛物种的IR谱峰；溴代异丙烷和异丙醇在催化剂表面吸附后均转化为异丙氧基，异丙氧基主要转化为丙烯和丙酮，丙烯进一步转化为丙烯醛；溴代正丙烷和正丙醇在催化剂表面吸附后均转化为正丙氧基，正丙氧基主要转化为丙醛；丙烯在催化剂表面吸附后转化为σ-氧烯丙基和异丙氧基，升温后σ-氧烯丙基转化为丙烯醛而异丙氧基转化为丙酮。

The action mechanism that (NaPO3)6 depresses almandine is two sides: one is that (NaPO3)6 is chemical adsorbed firmly on the surface of almandine and lead to almandine strong hydrophilic. The other is that (NaPO3)6 selectively dissolves Ca(superscript 2+) on almandine surface and makes the surface cations act with the collector lessening.

NaPO36对石榴石的抑制作用存在两种机理：其一，(NaPO3)6与石榴石表面Fe(上标 2+)发生化学键合导致其牢固吸附而使石榴石表面强烈亲水：其二，(NaPO3)6选择性溶解石榴石表面Ca(上标 2+)导致石榴石与捕收剂作用的表面活性质点减少。

Poly is a kind of membrane material with excellent characteristics, in order to improve its surface hydrophilicity, so as to increase its antipollution ability, surface modification of PVDF hollow fiber porous membrane has been studied, on the bases of reviewing all kinds of modification methods, the modification method of chemical grafting onto hollow fiber membrane surface was determined.

聚偏氟乙烯是一类性能优良的膜材料，为了改善膜表面的亲水性，提高其抗污染性能，必须对膜表面进行改性，本课题在充分考察各类改性方法的基础上，采用在膜表面接枝共聚的方法对PVDF中空纤维膜表面进行改性。

The true shape of the hull can be considered by distributing dipoles on the hull surface.The pressure fluctuations on hull surface can be calculated through Bernoulli's equation.

真实的船体表面形状可以通过在船体表面布置偶极子来考虑，求得船体表面的偶极子强度后，通过Bernoulli方程可得到船体表面的脉动压力。

The hydroxyl groups were introduced to the surface of silicone rubber by O_2 cold plasma treatment,coatings made from chitosan were chemically bonded to silicone rubber via silane-glutaraldehyde molecules and proved by the results of surface composites analysis with X-ray photoelectron spectroscopy and attenuated total reflection fourier transform infrared spectroscopy.

用氧低温等离子体处理硅橡胶，在其表面引入羟基，然后利用硅烷偶联剂的硅烷反应，通过中间物戊二醛在硅橡胶表面制备了几丁聚糖涂层。X射线光电子能谱和衰减全反射傅立叶变换红外光谱测试证实在硅橡胶表面成功制备了几丁聚糖涂层，表面接触角测试表明几丁聚糖涂层明显提高了硅橡胶的亲水性

An analytical expression is applied to compute the free-surface velocity derivatives and a collocation point shift method is introducedto enforce the radiation condition.

在考虑线性自由表面边界条件时，自由表面速度导数以解析的方法计算，为了满足自由表面辐射条件，自由表面奇点面元相对于其配置点向下游错位并被上置一定距离。

In the fluvial deposit environment, the quartz superficial characteristic is primarily by the inferior circle, the conchoidal breakage fracture and the submarine hit pit, revealing the transformation of current to the quartz; In lake-deposit environment, quartz sand superficial characteristic is by primarily abraded edges and parallel cleavage, the quartz maintained the primitive characteristic, indicating the quartz received few transformation of fluent, different quartz grain has their different curve character.

在河流沉积环境，石英砂的表面特征以次圆、贝壳状断口和水下撞击坑为主，显示了水流对石英砂颗粒表面的改造；在湖泊沉积环境中，石英砂的表面特征以多棱角和平行解理面为主，石英砂颗粒保持了原始的特征，表明了石英砂颗粒受到水流的改造比较少。不同沉积环境中石英砂颗粒表面结构特征都具有自己的曲线特征。

No clear conclusions can be made about the predictie alidity of specific measures, they found, except for criteria for the underuse of drugs for cardioascular disease.

除了心血管病不合理用药标准外，对于特定评价方法的预测效度没有明确的结论。

The third and last is that almost all of them, being infinite in number, have been impostures, and by idle and crafty brains merely contrived and feigned after the event past.

第三、即最后一点是：几乎所有这些不胜枚举的预言都是欺人之谈，都是在事件过后由无聊而狡猾的脑筋推测与凭空捏造的。