In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，對上海特定地區(qū)內(nèi)PAHs在環(huán)境介質(zhì)中的遷移徑途進行了分析討論这里只有精品99久久精品国产，結(jié)果表明上海市土壤和沉積物等環(huán)境介質(zhì)中PAHs的遷移存在多種途徑观看久草视频。

In transportation networks, dynamic OD matrix describes the time-dependent traffic demands, which is an important input of ATIS and ATMS, as well as a basic input of DTA models and many applicable microscopic traffic simulators.

動態(tài)OD矩陣描述了時變的交通需求，它是ATIS和ATMS的重要輸入18岁禁播网站，也是DTA模型和一些實用的微觀交通仿真器的基礎輸入數(shù)據(jù)色色色专区，直接影響到ITS系統(tǒng)的實時有效性。

We use quantitative method, analyzed the usage of saving matrix method in transportation routine selection, discuss the transportation cost by value engineering method and the optimization for logistics cost; also, we give the evaluation system for logistics cost.

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First, the distance matrix of public transportation line is introduced, then the directed relation graph is constructed. In the directed relation graph, we can give the optimal line by revised shortest path algorithms.

首先通過引入各條公交線路直達最短距離矩陣構(gòu)造了公交網(wǎng)絡直達關系圖国产色妇女在线视频，在直達關系圖上，利用修改了的最短路算法玖玖在线视频，即可求得最優(yōu)換乘路線欧美一级特黄一区二区三区播放免费在线网站。

transportation matrix：運輸矩陣

transportation algorithm 運輸算法 | transportation matrix 運輸矩陣 | transportation network 運輸網(wǎng)絡