forward direction center 中文意思是什麼
forward direction center
解釋
前方指揮引導中心-
Tip 7 : come up our of a turn in a forward direction down the hill to keep your center of mass with the center of your skis
要在朝山下前向的方向上跟上回轉，保持住身體中心和雪板中心的相對位置。 -
The contacting measurement method with a double probe is put forward after the detailed analysis of the state - of - the - art measuring methods of the thickness of wall. firstly, the theory - profile generatrix is built, and then the movement curve of the track of joint center is constructed, which aims at making the joint center move along the movement curve and keep the fixed sensor touching the wall. the measuring sensor examines the line in its normal direction of the interior wall all the time, the data from the sensor is the thickness value of the wall
論文通過分析國內外變曲率回轉體壁厚測量的現狀，提出了雙測頭接觸式測量方案:通過構造理論輪廓母線，建立鉸鏈中心的運動曲線，使鉸鏈中心始終沿運動曲線運動，以保證固定觸頭與傳感器測頭的連線始終在內壁法線方向上，從而傳感器測頭所得的數值即為壁厚值，該方案經模擬測試實驗取得了預期效果。 -
In this paper, basing on intruducing the technology supporting the m - commerce, the m - commerce ' s emergence and its foreground, we summarize its characteristic and the technic request of m - commerce application ; study the rule of mt and bring forward generic model of mt ; and simulate the mt crosses the boundary of las by computer simulation ; during the simulation, we design a method of a mobile acrosses the boundary of las in six direction ; then, analysis the result from the simulation by visual c + + 6. 0 and get the conclusion : mobile roaming is locality. this conclusion is significant to the design of the location management. considering the characteristic of m - commerce application and the mt ' s mobility, we present a position strategy, including reporting center selection, adaptive update and forwarding pointers
本文在介紹了移動商務的支撐技術以及它的出現和發展前景的基礎之上，通過對移動商務框架的剖析和對應用的研究，總結出了移動商務的特點和各種應用的技術要求；對移動商務中移動臺規律進行研究，提出了移動臺的一般模型；利用計算機模擬技術，對移動臺越區漫遊進行了模擬；在模擬過程中設計了基於微蜂窩網路的移動臺的6個方向越區漫遊模擬演算法，然後用visualc + + 6 . 0所編制的程序的運行結果進行分析，得出了移動臺越區漫遊具有局部性的結論。
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