优选

Objective To explore an optimum extraction technology of essential oil from peach blossom .

目的优选桃花精油的最佳提取工艺。

As the tetrahedral grids exist in the majority area, the pentahedral prism grids are adopted near the boundary, which meets the SST model's requirement of mesh in the boundary layer. Pressure recovery factors under different number of grids are calculated so as to decrease the error from coarse mesh, then the suitable number of grids is obtained.

流场大部分区域为四面体网格，在边界附近采用加密的五面体棱柱型网格，满足了SST模型对边界层网格的要求；为了减少网格过粗引起的汁算误差，还通过计算不同网格数下尾水管的压力恢复系数来优选出合适的网格数目。

The described tackifier is applicable to perchloride raw rubber based on fragment form and non-halide or low-halide raw rubber, and can make most of allyl group implement bromation reaction in priority.

所述增粘剂基于碎片形式的高氯化生橡胶和非卤化或低卤化的生橡胶，并优选使大部分的烯丙基进行溴化反应。

In a preferred embodiment, M comprises two or more transition metals from Groups 4 to 11 of the Periodic Table.

在一个优选的实施方式中，M包含2种或多种选自元素周期表第4-11族的过渡金属。

This thesis attempts to give a detailed phonological study of tones in Xiangtan dialect based on acoustic data.

本文采用实验语音学的方法以及最新的语言学理论优选论对湘潭方言的声调进行了详细的描述和分析。

The melting point, wettability and corrosion resistance of solder were measured and analyzed; the microstructure of the solder were observed using photomicrography.

测试优选合金的熔点和耐腐蚀性能，并对接头微观组织进行观察。

Objective］ The research aimed to optimize the extraction process of volatile oil from the pine needle of Pinus massoniana and analyze the constituents of volatile oil.

［目的］优选马尾松松针挥发油的最佳提取工艺，并对挥发油中化学成分进行分析。

One effective way is preferred pump barrel and plunger of materials and surface treatment processes.

其中一个有效的方法就是优选泵筒和柱塞的材料和表面处理工艺。

Based on the strict requirements of safely and fleetly deep drilling and reservoir protection to drilling fluid in drilling engineering, the modified polyalcohol anti-sloughing agent was developed and then a new alcohol drilling fluid was gained through screening other additives and optimizing formulation.

基于钻井工程中安全快速钻进及油气层保护对钻井液的严格要求，开发出了改性多元醇防塌剂，在此基础上通过优选其他处理剂和配方优化研制出了一种新型醇类钻井液。

In this paper,polychromatic graphs and polychromatic sets theory are introduced.

文章介绍了多色集合理论、多色图，并详细叙述了该理论在设计零件加工工艺方案上运用的流程和优选方法。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。