接触表面

Infection of legume roots begins with attachment of rhizobia to the root surface Biochemical signals are exchanged between the partners and then rhizobia invade the root hairs through an infection thread.

根瘤菌先接触被侵染的作物根的表面，互相交换生化信号后，根瘤菌通过侵入线侵入根毛。

It is the principle of the use of atomic diffusion permeability to zinc and steel surface at a high temperature exposure, the formation of iron and zinc alloy protective coating.

它是利用原子扩散渗透原理，使锌粉与钢铁表面在较高的温度下接触，形成铁锌合金保护层。

It provides attractive touch to Kitchen and a durable surface to work in kitchen.

它提供有吸引力的接触给厨房和耐久的表面给工作在厨房里。

An oxide coating is formed on the surface of the aluminum powder after the surface passivation treatment, so as to efficiently avoid the formation of leakage conductance due to mutual contact between eclectically-conducting additives and thereby to reduce the dielectric loss of the material. The composite material has high dielectric constant, low density and good flexibility. The production method of the composite material has the advantages of simple and controllable process, low hot-pressing temperature, energy conservation and environmental protection.

铝粉经过钝化处理，表面形成一层氧化物包覆层，有效地避免了导电添料因相互接触而形成漏电导，降低了材料的介电损耗；复合材料介电常数高，密度低，加工简单，并具有良好的柔韧性；复合材料的制备方法工艺易控简单、热压温度低、节能环保。

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Surface coating technology is widely applied to the engineering. While the matching surface of machine parts are covered with the wearing coatings, their capability of resisting frictional wear will be improved obviously and the service life will be extended.

表面涂层技术在工程中的应用愈来愈广泛，机器零部件的配合部位涂敷耐磨涂层后，能有效地提高接触区域内的抗摩擦磨损能力，延长零部件的使用寿命。

An approximate analytical approach, which can be used to analyze the optical characteristics of metal-clad step or graded index waveguides in near cutoff, is presented at first. The mode propagation characteristics of metal-clad step index waveguides in near cutoff are comprehensively analyzed.

GaAs/GaAlAs异质结光波导材料是目前集成光学中的重要材料，本论文在系统介绍外延生长技术的基础上，利用普通的液相外延炉，成功地生长出可用于光波导器件制作的、表面较光滑并具有较大面积（14×16mm〓）的GaAs/GaAlAs异质结光波导材料，C-V法测得波导层载流子浓度为2—4×10〓cm〓，Al-Schottky接触的反向电压大于20伏，平板波导和脊波导通光实验良好。

And the polymer is so sensitive, it can detect explosive residues on the order of a few millionths of a gram. Often more than a thousand times that amount is left on surfaces.

这种聚合物的灵敏度很高，能够检出几百万分之一克的炸药残余物（通常，接触过炸药的表面含有的残余物是它的一千多倍。

And the polymer is so sensitive it can detect explosive residues on the order of a few millionths of a gram. Often more than a thousand times that amount is left on surfaces.

这种聚合物的敏捷度很高，能够检出几百万分之一克的炸药残余物（通常，接触过炸药的表面含有的残余物是它的一千多倍。

A superficial world of dinner parties at the Veneerings and the aspirations of the Wilfers household.And as their lives weave with a multitude of characters,a complex story of love and money emerge with true Dickension vision.

这是个虚浮，注重表面的世界，透过与他们所接触日趋庞杂的人物，狄更斯写下了这个爱情与金钱相交织的复杂故事。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷