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To broaden desert shrub new utilizing fields, accelerate desert shrub developing to the direction of high added-value and high benefit, the paper studied on the liquefaction of Salix, Caragana and Poplar in the presence of Phenol under sulfuric acid catalysis. The optimum processing parameters for Salix, Caragana and Poplar liquefaction and resinification were investigated. The effect of molar ratio of formaldehyde to liquefied products and NaOH to liquefied products on the character and glue strength of liquefied products resin was studied.

摘 要：为了开辟沙生灌木资源新的应用领域，促使沙生灌木资源的利用向高附加值、高效益的方向发展，本文以苯酚作液化剂，以稀硫酸作催化剂对沙柳、柠条和杨木进行液化实验，分析了反应温度、液比、催化剂用量及液化时间对液化反应的影响；并研究了沙柳、柠条和杨木液化产物树脂化合成工艺和配方，分析了不同的甲醛与液化产物摩尔比以及氢氧化钠与液化产物摩尔比对沙柳、柠条和杨木液化产物树脂的各项性能的影响。

AbstractBased on the character of T/P satellite altimetry return waveform, we present a method to retrack the waveform data and determine the retracking correction with function approach, then improve the precision of altimeter observations in offshore.?For the South China Sea region,?we have processed four cycles T/P altimeter waveform data.

根据测高卫星返回波形的特征，给出了由Topex/Poseidon卫星波形数据进行波形重构的方法，并采用函数逼近算法确定波形重构改正量，进而改善测高卫星近海岸海面高观测值的精度。

But now the full_text retrieval system seldomly satisfied the users on recall and precision when delealing chinese text, the result is in high degree be associated with the character of the chinese text.

然而目前的全文检索系统或因特网搜索对中文信息在查全率和查准率很难让用户满意，这很大程度上与中文的语言特性相关。

This paper analyzes the semantic conmmunication of spiceable product in the aspects of the form,color and meterial,disscussed the character and the method of the seman.

情趣化产品在一定程度上体现着人们文化、心理和消费水平，同时，情趣化有效地增强了产品的市场竞争力。

The Dimension detection of mechanical parts has the character of untouching, high speed, high precision. So the detection system of mechanical parts is widely used in automated production.

基于机器视觉的零件检测具有非人工接触，速度快，精度高等特点，因此基于流水线的零件自动化检测系统目前广泛应用于工业自动化生产过程中。

Methods: Proceed hysterosalpingography and patency test using acoustic contrast agents in stead of iodipin and observe the uterotubal ultrasonographic images under the conditions of transvaginal sonography and CDPI.50 infertility women were observes by transvaginal sonography,Ultrasongraphic hysterosalpingographyand color Doppler imaging,analyses the character of dynamic ultrasound images.

利用超声声学造影剂代替碘油行子宫输卵管造影及通液术，并在实时阴道超声及CDPI状态下，观察子宫输卵管动态超声图像特征。

This article selects Cang county、Xian county and Botou city as the study area which have a large growning area. Using ecological-geology and geochemistry background materials based on previous reasearch results, takes out a geochemistry evaluation of the soil quality, The safety of Zizyphus jujube cv. Jinsi-xiaozao is tested, and especi.ally studied the character of nutrient element's migration and distribution in soil. This study aims to provides scientific basis for the construction of high-quality Zizyphus jujube cv.

本文选取金丝小枣种植面积较大的沧县、献县和泊头作为研究区，在研究区已有研究成果的基础上，利用生态地质背景资料和地球化学背景资料，对金丝小枣区土壤质量进行了地球化学评价，对金丝小枣区的金丝小枣进行了安全性评估，并对营养元素在土壤中的迁移分布特征进行了重点研究。

In this way a reign of terror becomes universal, and the state acquires everywhere something of the character of the comite du Salut Public.

这样一种恐怖的统治，已变为世界性的，而国家在任何场合都带有&公安委员会&的某些性质。

What is no less important, in his view, is the character of the Palestinian state.

什么是同样重要的是，在他看来，是性质的巴勒斯坦国。

What is no less important, in his view, is the character of the Palestinian state.

什麼是同样重要的是，在他看来，是性格的巴勒斯坦国。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。