placement point 中文意思是什麼
placement point
解釋
理想的擊球點-
Depending on the placement, aim this speaker either up or down to point directly at the listener
基於這個布置，音箱或高或低的正對著收聽者。 -
The main work of this paper was as fellows : ( 1 ) generalized the development of pre - stressed steel structure in our nation and abroad, and pointed out the main problem in practice ; ( 2 ) presented the mechanism of pre - stressed steel structure and revealed its applicable range ; ( 3 ) established the optimization design model for pre - stressed steel structure, which accounts for constraints on stresses and displacements of structure ; ( 4 ) brought forward the optimization design method, which combined linear programming and the principle of full restriction, through which we can obtain the magnitude of each time pre - stress and the optimized sections of each members of structure ; ( 5 ) analyzed the best times of pre - stress and pointed out that 2 ~ 3 times is preferable ; ( 6 ) conducted optimization design on large - space steel roof, horizontal parallel steel truss with local cables, horizontal parallel steel truss with global cable, and ultra - static steel truss, the result of which indicated that the multiple pre - stress structure is very economic ; ( 7 ) compared different schemes of cable placement for horizontal parallel steel truss, and the results showed that the local cable only unloaded the second girders, but had no response on the first girders and stomach poles, while global cable could unload the second girders and the stomach poles outside of turning point of cable, thus proving that global cable is more economic than local - cable
本文的主要工作是：對國內外預應力鋼結構的發展歷史及現狀作了綜述和總結，指出當前預應力鋼結構工程實踐中存在的主要問題；闡述了預應力鋼結構的受力機理，並指出預應力鋼結構的適用范圍和特點；在考慮結構應力和變位約束的條件下，建立預應力鋼結構優化設計模型；提出多次預應力鋼結構優化設計方法和步驟，採用線性規劃和滿約束準則相結合的優化方法，可優化設計出施加的每一級預應力的大小，並得到結構各部分的優化截面；對多次預應力最佳的施加次數作了分析，並建議以2 3次為宜；為驗證文中理論和方法，分別對大跨多次預應力鋼屋架、局部布索的水平平行弦鋼桁架、整體布索的水平平行弦鋼桁架和局部布索的超靜定鋼桁架等算例進行了優化設計，經濟效益明顯；對水平平行弦鋼桁架的幾種施加預應力的方案進行比較，對于局部布索，預應力只對下弦起到卸載作用，對上弦和腹桿基本不起作用；而整體布索預應力除對下弦卸載外，對索折點以外部分腹桿也起到卸載作用，經濟效益好於局部布索。 -
Firstly, it give a scientific definition to the contents the army ' s social security system, i, e., military social insurance system, military social special care and compensation system, military social welfare system, military social aid system, military retirement placement support system and supplementary social security system. secondly, from the point of dialectical material and comparative law, this paper discusses the reasons of the shortness of the army ' s social security system
一是在深入分析研究黨和國家關於我國社會保障體系的有關政策精神的基礎上，科學界定了我國軍人社會保障制度的體系結構和主要內容，指出現階段我國軍人社會保障體系應該包括軍人社會保險體系、軍人社會優撫體系、軍人社會福利體系、軍人社會救助體系、軍人退役安置體系以及補充社會保險體系等。 -
( 2 ) an algorithm of tows number calculation is proposed. according to the distance between the points on the path and the nearby fiber placement path, the tows number is calculated on each point
首先等距相鄰的鋪絲路徑，然後依據當前鋪絲路徑上各點與等距線的距離關系，求得該鋪絲路徑上各點處的絲數信息。 -
Straight line position method referred that player ' s position before the net, placement of the ball and middle point of bottom line should be at the same line in competition
摘要三點站位法指在網球實戰中球員在網前的站位與球的落點及底線中點應符合三點同線的要求。 -
Firstly, disperses fiber placement path. secondly, finds the control point which is nearest to the dispersed point on the fiber placement surface. finally, acquires the fiber placement information of each control point
首先將鋪絲路徑離散，找到鋪絲面上與離散點距離最近的點作為控制點，然後分別求得各控制點處的鋪絲信息。
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