descent region 中文意思是什麼
descent region
解釋
降壓區-
A developed simple m - s model for image segmentation in geometric active contour model is presented based on intra - region similar and inter - region dissimilar properties. the model constructs an energy ( cost ) function, which is made of intra - region variations and weighting squares of subtraction of region mean values. using gradient - descent methods, the energy function is minimized and we get a curve evolution equation that segments image
基於區域內一致性加權區域間差異性構造能量函數，利用最陡梯度法使能量函數最小化，提出了一種改進的簡化mumford - shah （ m - s ）圖像分割模型，該模型利用區域內方差描述區域內一致性，區域間平均灰度值之差的平方描述區域間差異性，實驗結果表明，通過調節加權系數，該模型對弱邊界圖像分割具有較強的適應性。 -
In fact, during certification, a region of low altitude and low velocity ( the h - v restriction zone ) is established where it is considered impossible to make a safe descent
然而由於缺乏充分的訓練，自轉飛行過程具有一定的危險性。實際上，在高度和速度的一定范圍內，直升機無法實現安全的自轉著陸。 -
It is interesting to note that people of asian descent now make up approx 16 % of the auckland region but only few ever seem to seek election to local committees health boards etc
有一個值得注意的現象：目前亞裔已經占據了奧克蘭總人口的大約16 % ，但是只有很少亞裔加入當地的各種管理委員會，比如地區醫管局，等等。 -
The main results are as follows : ( 1 ) the evolutionary features of precipitable water in the whole troposphere in northwest china are different between over the east region and over the west region during the past 50 years from 1951 - 2000 : in the 1990s " the pv in the east of ncw is evidently decreased, and the scope of the descent is the largest one in the same latitude over the north - hemisphere, on the contrary, which in the west regions showed increasing trend
最後，分析了近50年來西北地區東部垂直運動強度的年代際變化特徵。主要得出了如下結論： （ 1 ）西北地區東、西部對流層整層大氣可降水量在1951 - 2000年近50年來表現出不同的變化趨勢： 90年代以來，東部明顯減少，而西部有所增加，且東部減少的幅度在北半球同緯度地區最大。
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