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The paper focuses on the tetraploidy black locust on Loess plaeatu of West Shanxi province, applys steady state promoter method and image processing technology to study the days transpiration water consumption in different weather ,different seasons and different site conditions,has primary analysis on the impact of environment on the transpiration and carries on the calculation to the tetraploidy locust tree by the single leaf water consumption to the single tree water consumption in CaiJiachuan watershed; Uses fast weighing method to measure and analyze the transpiration water consumption of five different herbs under the tetraploidy black locust forest (Capillary Wormwood,Vanilla,Agropyron Sristatum , Common Sowthistle and Medicago Sativa) in short time, in the same and different growcrop,and calculates the average transpiration water consumption per square metres ;the soil colome weighing method was used for determining diumal variation quantity of soil moisture evaporation, analyzing the dynamic variation and caculating the total quantity of soil evaporation water consumption from May to August ; then 5 kind of suppositions about the types of surface vegetation coverage are proposed in experimented site and the total evapotranspiration water consumption are calculated under 5 suppoitions ,aim at providing preliminary theoretic basis for ascertaining the transpiration water consumption of tetraploidy black locust forest,controling standing forest density and optimizing the forest grass deploy on loess plaeatu of west Shanxi province .

本文以两种不同立地条件下的四倍体刺槐林为研究对象,采用了气孔计法对蔡家川流域生长季内不同天气状况下(典型晴天、阴天和半阴天)四倍体刺槐日蒸腾耗水规律、不同季节(生长季初期、中期和末期)的蒸腾耗水规律、两种不同立地条件下四倍体刺槐蒸腾耗水比较以及影响四倍体刺槐蒸腾耗水的环境因子进行初步研究分析,并对四倍体刺槐由单叶耗水量向单株耗水量进行推算;采用经典快速连续称重法对四倍体刺槐林地生长的主要5种草本植物(白蒿、香青兰、冰草、苦苣和苜蓿)短时段内蒸腾耗水规律、不同生长季内蒸腾耗水规律、同一生长季不同种类草本植物蒸腾耗水量进行了比较分析,并且采用面积与重量比的方法推算出了单位面积四倍体刺槐林地几种主要草本植物平均蒸腾耗水量:采用土柱称重法测定了5月份~8月份土壤水分蒸发昼夜变化量、对试验期内土壤蒸发量动态变化作了分析、推算出了试验地5月份~8月份土壤蒸发耗水总量;对试验地地表植被覆盖类型提出了5种假设,推算出5种假设的情景下蒸散耗水总量,旨在为晋西黄土区四倍体刺槐林蒸腾耗水量的确定、林分密度调控以及林草优化配置等提供初步的理论依据。

Analyzing the microstructure of composites truly, three kinds of unit cell structures have been identified, i.

本文对其细观结构作了准确的单胞划分,定义了三种细观结构的单胞模型。

Analyzing the microstructure of composites truly, three kinds of unit cell structures have been identified, i.e.

本文对其细观结构作了准确的单胞划分,定义了三种细观结构的单胞模型。

Based on the obvious xenia effects of high oil and heterosis, a technique called TEU(three-effect-utilization) was developed to pyramid the cytoplasm male sterile effect, heterosis and xenia of oil content into a production system, which has patented in China.

从20世纪20年代开始,玉米杂种优势利用经历了综合种、双交种、三交种、单交种阶段,每一次利用方式的改变都使玉米生产的水平得到了很大的提高。

The low temperature biofilm was composed of physchrotrophs, Through the experiments of isolation and identification, 8 strains of physchrotrophs were obtained from biofilm, they are Comamonas、Flavobacterium、Arthrobacter、Bacillus、Micrococcus、Pseudomonas、Achromobacter and Vibrio.

低温生物膜的活性主要来自其上面的低温微生物,分离鉴定试验结果表明,组成低温生物膜的微生物主要有8种,发现它们分别属于丛毛单胞菌属、黄杆菌属、节杆菌属、芽孢杆菌属、微球菌属、假单胞杆菌属、无色菌属和弧菌属。

Then the lift and torque models of double wings fin stabilizers flapped lengthways and single wing fin stabilizers flapped breadthwise at zero speed are acquired on the basis of step by step degenerate derivation.

根据Weis-Fogh机构的组成和结构特点,论文提出了双翼纵向拍动型、单翼纵向拍动型和单翼横向拍动型三种类型的零航速减摇鳍。

Any of various gram-negative, rod-shaped, mostly aerobic flagellated bacteria of the phylum Pseudomonad, commonly found in soil, water, and decaying matter and including some plant and animal pathogens.

假单胞菌任一种革兰氏阳性杆状的假单菌门雷氧鞭毛虫细菌,一般见于土壤、水、腐败物,还有一些植物和动物的病原体中

Two new kind of energy transfer donor-acceptor dyads consisting of α-naphthoic acid moiety and 9-aminoacridine units linked by tetraethylene glycol or triethylene glycol flexible chain have been synthesized.

本工作分别用聚三乙二醇及聚四乙二醇柔性链将α-萘甲酸酯与9-氨基吖啶连接起来,合成了两种新型二元发色团分子体系,在两个体系中,选择激发α-萘甲酸酯,都可以发生从α-萘甲酸酯到9-氨基吖啶的高效率的单重态-单重态能量传递。

Utilizing the established experimental device of single fracture nuclidic migration imitation experimental device and adopting the continually-injected and pulse-injected measures, nuclide migration experiment is made for 〓I〓 and 〓Cs〓 in granite single fracture.

利用所建立的单裂隙核素迁移模拟实验装置,采用连续注入和脉冲注入两种方法,做了〓I和〓Cs在花岗岩单裂隙中的核素迁移实验。

A cross shaped sum-difference network is constituted by microstrip ramose coupler with compact structure and calculated by ADS,while the 8×8 rectangular patchs,which is optimized by HFSS on basis of the method of parameter load and so on,form the transmiting/receiving antenna.

使用ADS优化设计了一种结构紧凑的&十&字形和差网络,并且使用参数加载等方法,在HFSS中仿真出一个8×8的微带矩形贴片天线阵列作为收/发天线,和差网络和微带天线阵列组成单脉冲天线阵。8×8天线阵列、和差网络和馈电系统在同一平面上,所以此天线阵列与传统单脉冲阵列相比体积更小,结构更紧凑,对该天线阵列进行了研制和测试,测试结果符合设计要求。

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According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。

When I was in school, the rabbi explained everythingin the Bible two different ways.

当我上学的时候,老师解释《圣经》用两种不同的方法。