under sea造句
例句與造句
- Construction of bridge pile - foundation under sea in karst stratum
巖溶地區(qū)橋梁地質(zhì)勘測與樁基施工處理要點 - It includes : target detection under sea - clutter and multipath propagation , multipath effects on parameters measure of target , analysis and comparsion of all multipath reduction techniques " performance
它包括海雜波背景和多徑傳播影響下的目標檢測技術研究；多徑傳播對目標參數(shù)測量的影響；各種多徑消除技術的性能分析與比較。 - There is a lot of chloride in ocean environment which is a main reason of the steel corrosion , so we must predict thickness of chlorine ion in order to count the beginning corrosion time of the steel under sea environment
在海洋環(huán)境中，含有大量的氯離子，而氯離子是引起鋼筋銹蝕的一個重要因素，因此預測在混凝土中氯離子的濃度是計算海洋環(huán)境中鋼筋初始銹蝕時間的前提。 - A monte carlo algorithm was presented to model the relation between the scattering phenomenon , depolarization changes and sea water depth , it is discovered that the radius of scattering point and the degree of depolarization increase with increasing of the sea water depth . at last , a optical engineering software ( lighttools ) is introduced to simulate optical scattering in the deep sea water , and studys the corelation between scattering and relative refractive index , particle density and particle size in the sea water . the experiment results show that the intensity of scattering will increase evidently with the increasing of particle size , particle density and relative refractive index . the methods and results in the article provide the basic theory and experiment validation for improving performance of communication , detection and imaging under sea water
本文以球形粒子的mie散射理論、 stokes矢量法以及mueller矩陣來研究海水的散射特性和散射中的退偏振度變化;通過montecarlo方法模擬藍綠激光在海水傳輸過程中的散射現(xiàn)象以及散射中的退偏度變化與海水深度的關系,發(fā)現(xiàn)隨著海水深度的增加,散射后的光斑半徑、退偏振度將逐漸增大。最后通過光學工程軟件( lighttools )對海水中的散射進行仿真實驗,研究散射與海水中粒子密度、粒子大小和相對折射率的關系。實驗結(jié)果表明,隨著粒子半徑、粒子密度和相對折射率的增加,散射的強度將顯著增加。 - At the same time , the ever - growing population , the resources shortage , and the daunting environmental pollution have made high rises , skyscrapers a trend . more over , concrete structures have become widely demanded in severe environments such as off - - shore petrol platform , cross strait bridge , under sea tunnels , drainage pipes , nuclear waste containers , nuclear reaction shells , poisonous chemical containers etc . . all of the above mentioned buildings and structures require the use of cement based materials
與此同時,在人口增長和資源短缺、環(huán)境污染的威脅下,建筑物越來越向著超高層化、超大跨化方向發(fā)展,各種嚴酷環(huán)境下使用混凝土結(jié)構(gòu)也越來越多,如:海上石油平臺、跨海大橋、海底隧道、污水管道、核廢料容器、核反應堆外殼、盛裝有害化學物的容器等,如此眾多的建筑物和結(jié)構(gòu)都主要采用了水泥混凝土材料。 - It's difficult to find under sea in a sentence. 用under sea造句挺難的