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In addition to, the thinness of the intermetallic layers of Sn-Ag-Cu with the copper plate are compared with that of Sn37Pb. The results show that Ag、Cu has influence on the solidus temperature, spreading property, electrical conductivity of alloy. The solder shows more favorable combination property as content of Ag is 3% and content of Cu is 2.8%.

在众多无铅焊锡合金中，Sn-Ag-Cu系无铅焊锡合金以其优良的润湿性能及力学性能已被普遍认为是最有潜力的含铅焊锡合金的替代品，一些大的科研机构和制造商纷纷推出自己所推崇的Sn-Ag-Cu合金成分，例如：美国AMES 实验室选用的合金成分为Sn-4.7Ag-1.7Cu[1]，Ericsson公司选用的合金成分为 Sn-3.8Ag-0.7Cu[2]。

Synthesizing and processing technics ; free-lead solder alloy ; solidus temperature ; spreading property

材料合成与加工艺；无铅焊锡合金；熔点；铺展性

In the last few years, researches the problem of the underwater sail machine's sound have been common, the content of the research is very extensive, including the modeling, method of its solution, frequency curve, the wave's property in spreading, the syntonic frequency and the damp material on such coupling system.

近几年，水下航行器的声振一直是国际上研究的热点，研究的内容非常广泛，其中涉及这类耦合系统的建模、求解方法、频散曲线与传播波性质、外激励下的共振频谱及阻尼材料降噪等。

Some properties of this solution, including surface tension, spreading coefficient and fire extinguishing.

介绍了一种自制的多组分水成膜泡沫溶液，并对该泡沫溶液的各种性能（表面张力，铺展性，灭火性能等）进行了表征，同时与传统的水成膜泡沫进行了对比。

Sonne recently handed off day-to-day operations to start a foundation dedicated to spreading his business model.

Sonne最近推开了日常的业务，发起了一个专注于推广他的商业模式的基金会。

Beautiful spreading fern of eastern North America and eastern Asia naturalized in western Europe; pinnately divided fronds show a slight tendency to fold when touched; pinnules enclose groups of sori in beadlike lobes.

北美东部和亚洲西部一种广泛分布的美丽的蕨类，并移植欧洲西部；当受到外界刺激时羽状半裂复叶略微合拢；二回羽叶包裹珠形叶片的孢子囊群。

The main representations for agriculture industrialization to improve our agriculture economy are: first, to solve the contradiction between the small production of our agriculture and big international market; second, to heighten the comparative efficiency of agriculture by specialization of production; third, to promote the process of urbanization by widening the traditional industrial chain. Fourth, to solve the contradiction between specializationproduction and social serves by making foreign trade systems of agriculture goods sound. fifth, to raise diathesis of farmers by spreading agriculture techniques; sixth, to promote standardization and internalization of agriculture by making the standardization system.

农业产业化经营促进我国农业经济发展的主要表现是：第一，解决了我国农业小生产和国际大市场之间的矛盾；第二，实现了专业化生产，提高了农业的比较效益；第三，拓展了传统的产业链，促进了农村城镇化进程；第四，健全了农产品外贸流通体制，解决了专业化生产和社会化服务之间的矛盾；第五，促进了农业科技的推广，提高了农民的素质；第六，健全了农业标准体系的建设，促使农业走向规范化、标准化、国际化。

A marsh plantof the North Temperate zone,having small,densely clustered,greenish flowers partly enclosed in a spreading white spathe.

水芋生于北温带的一种沼泽植物，长有小的、紧簇的、部分包在伸展的白色花苞内的浅绿色花朵

Select one of the standard Spatter brushes and adjust brush scattering to imitate the natural spreading of rust.

选择的标准之一飞溅刷子刷散射和调整，以模仿自然传播生锈。

Inflorescence usually a cylindrical spikelike panicle, rarely with spreading primary branches.

通常的花序一种圆筒状的穗状的圆锥花序，很少具平展的主枝。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。