性摩擦

In order to analyze the conservation of maize centromeric satellite DNA and centromeric retrotransposon in the subspecies and relatives of Zea mays, dual fluorescence in situ hybridization was used to detect the existence and distribution of the above two repetitive sequences in Zea mays ssp. mexicana, Z. diploperennis, Z. perennis, Tripsacum dactyloides, Coix lacryma-jobi, and Sorghum bicolor.

为分析玉米着丝粒卫星DNA和着丝粒反转录转座子在玉米种的亚种及近缘种中的保守性，采用双色荧光原位杂交检测了这两种重复序列在墨西哥玉米、二倍体多年生类玉米、多年生类玉米、摩擦禾、薏苡、高粱中的存在和分布。

The preparation of IPN water-borne PU/PA binder, and the influence of different proportion to tensile strength, elongation at break, crocking fastness, water and dust absorbency and soaping fastness are all introduced in this paper.

介绍了水性PU/PA的IPN涂料印花粘合剂的制备方法，及其不同配比对拉伸强度、断裂伸长率、摩擦牢度、吸水性、吸尘性、皂洗牢度的影响。

In the transformation of selected high strength, friction and temperature performance of graphite impregnated silver better ring.

在改造中，选用了强度高、摩擦性能和耐温性较好的浸银石墨环。

Biology enzyme is adopted to deal with the rabbit wool fibre,which changes the modality and configuration of the rabbit wool fibre,improves fibre′s surface friction coefficient,fortifies the holding force among the fibres,enhances the spinnability,and meliorates the depilation of the rabbit wool textiles.

对兔毛纤维采用生物酶处理，使其形态结构发生改变，从而提高了兔毛纤维的表面摩擦系数，增加了纤维之间的抱合力，提高了纤维的可纺性，改善了兔毛纺织品的脱毛现象

ZA alloy is based on Zn and composed of Al, Cu, Mg added as alloying elements. It is a kindof environmental friendly material that possesses characteristics of high strength, better plasticity,excellent wear resisting property, low friction coefficient and high specific strength, low meltingpoint and no magnetic. ZA alloy has been widely applicated in the fabrication of mechanical partsand models, such as bearing, axle sleeve, pressing plate and turbine. However, the joiningproblem of ZA alloy that hasnt been solved has limited its application in some fields.

ZA合金是以Zn为基，添加了Al、Cu、Mg等合金元素，具有强度高、塑性好、耐磨性优良、摩擦系数低及较高的比强度、低的熔点、无磁性等特点的环保材料，广泛应用于制造轴承、轴瓦、压板、涡轮等机械零件及模具等，但由于连接问题没有解决限制了ZA合金在一些领域的应用，也因此成为ZA合金急亟待解决的问题之一。

The results show that properties of the copper-coated graphite/silver matrix composites have lower resistivity and coefficent of friction, higher hardness, bending strength and wear resistance.

结果表明，镀铜石墨－银基复合材料具有低的电阻率和摩擦因数，以及高的硬度、抗弯强度和耐磨性。

Now the list type friction clutch quite consummates in thestructural design aspect Uses has axial elastic enhancedthe coupling joint smoothness Clutch driven disk always becomes theChinese dress to have the torque shock absorber, had prevented thetransmission system reverse resonated, reduced the noise andmoves the load.

如今单片干式摩擦离合器在结构设计方面相当完善。采用具有轴向弹性的从动盘，提高了离合器的接合平顺性。离合器从动盘总成中装有扭矩减震器，防止了传动系统的扭转共振，减少了传动系噪声和动载荷。

The material densified and heat-treated had good friction properties and wear resistance compared with the same chemical contents which had not been treated.

经过楔压和热压后的相同成分的复合材料的摩擦系数比较稳定，且耐磨性得到很大程度的提高。

Keywords: water-soluble polymer;microscale ball; friction chemistry

中文关键词：水溶性聚合物；微米级滚珠；摩擦化学

But the friction presented in precision machine linear servo system has become an impediment to improve the performance.

而精密机床直线伺服系统中摩擦引起的爬行、振荡、追踪误差等现象是系统高精度和快速性的严重障碍。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。