datum depth 中文意思是什麼
datum depth
解釋
基準面深度-
To use the athwart gradient protection which takes the end of dam as the datum mark will reduce the digging depth of the stilling basins is reducing, and increase the energy dissipation rate
採用以壩體末端為基準面的壩體逆坡防護時，消力池挖深減小，消能率提高，壩面平均流速減小，壩區防護難度降低。 -
Assuring rate of depth datum
深度基準面保證率 -
The digital map is usually formed by the water depth ' s database measured on the seabottom. because of the disadvantage that the database is kept secret, this dissertation introduces a new method : first, the depth data are picked up from the electronic chart, then interpolation of the depth datum by kriging algorithm is adopted to gain the digital map. the method is the precondition of the terrain matching when it is researched by simulation, and it is the complement of the database
通常數字地圖都是通過海底測量的海底水深數據庫來形成，針對水深數據庫存在保密性等特點，本文提出了一種從電子海圖提取水深數據，然後採用kriging方法進行插值形成數字地圖的方法，該方法是進行地形匹配模擬研究的前提，而且它也是海底水深數據庫的一個補充。 -
The first one of the two chapters deals with the objective of logistics centers location, the principle of location should be followed, and the processing procedure of datum. and the second introduces three material mathematical models and uses one of the models solves a practical issue. by the help of the above - mentioned contents, the author researches the effect of logistics centers in the logistics industry in depth
在這兩部分內容當中，前者對於物流中心選址前目標的確定，選址時應當遵循的基本原則和對選址時收集的資料處理等內容進行了詳述；後者則分別對重心法、逐次逼近法中的鮑姆爾?沃爾大法和混合整數規劃法三種數學選址的方法進行了介紹。 -
In this paper, the problems existing in the design, manufacture and use of the gauge groove and the corresponding prove method, are discussed. then it introduces the groove method which bases on the groove center as the datum and uses line depth to control line width
論述了刻線量規設計、製造、使用中存在的問題和改進方法，並介紹了以刻線中心為基準，以線深控制線寬的刻線方法。
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