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Catalytic effect of ionic liquids to isobutane and butene alkylate reaction was studied,composition of ionic liquids,isobutane and butene mole compares factors to the alkylate reaction influence was reviewed.

研究了离子液体对异丁烷与正丁烯烷基化反应的催化作用，考察了离子液体组成、异丁烷与正丁烯物质的量比等因素对烷基化反应的影响。

First of all,a more reasonable dither matrix is constructed through element re-composition and discrete rotation based on the primary dispersed-dot Bayer dither matrix.

首先，将原驱散式Bayer抖动矩阵进行元素重组和离散旋转以构造一个更为合理的抖动矩阵，然后按照新矩阵对图像进行半色调化处理。

The Dashankeng gneiss located in the northeastern Dabie mountains is composed mainly of potassium feldspar, plagioclase and quartz with minor hornblende, biotite and allanite, belonging to monzonitic granitic in composition.

北大别东部大山坑片麻岩主要由钾长石、料长石和石英组成，少量角闪石、黑云母和褐帘石，成分为二长花岗质。

OBJECTIVE:To study the effects of selenium and allitridi on the antioxidant function of heart and blood composition in alloxan diabetic mice.

目的：观察亚硒酸钠、大蒜素及其合并用药对糖尿病小鼠心脏抗氧化功能及血液成分改变的保护作用。

The method and processes to design and optimize the composition of low alloy structural steel was given.

提出了从相结构因子和界面结合因子出发进行低合金结构钢的成份优化设计的方法和步骤。

Its composition is similar to almond oil for which it's often substituted.

它的组成是类似杏仁油，为它的往往被取代。

Composition of both spermatophyte and pteridophyte flora of a relict Alsophila spinulosa community in Wutongqiao Nature Reserve of Leshan region was discussed. It shows the proportion of Tropic and Cathaysia elements in both spermatophyte flora and pteridophyte flora was almost 2/3 of the total at the genus level, and even more at the family level. There was a distinct ancient endemism phenomenon in spermatophyte flora, owning to being 8 relict and remnant endemism genera in the total of 9. Furthermore, the proportion of Tropic and Cathaysia elements both at family and genus level in the pteridophyte flora were much greater.

选以乐山五通桥桫椤自然保护区-桫椤群落的种子植物区系与蕨类植物区系组成为研究对象，发现种子植物区系在属的水平上热带成分与古华夏成分占到近2/3，在科的水平上则更高；种子植物区系中有9个中国特有属，其中8个为残遗或原始类型的古特有属，表现出典型的古特有现象；而在蕨类植物区系中热带成分和华夏成分所占比重更大。

Grand Canyon tourist area is currently dominated by Taniguchi scenic waterfall, water, scenic spots and thin strip of sky scenic Walled volume three-part composition, in its core area of difficult terrain, fresh air, waterfalls Nagareizumi spread, pictographic vividly the landscape, rich in plant and animal species; have cycads stumble , Alsophila spinulosa, macaques, and other countries Craspedacusta rare animals and plants, Tamron large waterfall 200 meters, magnificent, amazing!

大峡谷旅游区目前主要由谷口瀑布景区、水卷寨景区和一线天景区三部分构成，其核心区地势险要，空气清新，飞瀑流泉星罗棋布，象形景观惟妙惟肖，动植物种类丰富；拥有苏铁蹶、桫椤、短尾猴和桃花水母等国家珍稀动植物，腾龙大瀑布飞流直下200多米，气势磅礴，让人叹为观止！

Study was made on soil organic carbon composition and distribution law in Altai Mountains.

土壤有机碳是土壤肥力的重要物质基础，其对土壤肥力的作用不仅决定于其数量，而且决定于其质量。

Objective:This topic choose the white althaea rosea flower to conduct the chemical composition research.

目的：选择新疆产白色蜀葵花对其进行化学成分研究。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。