bottom-up test 中文意思是什麼
bottom-up test
解釋
由下而上測試-
Bottom - up test
由下而上測試 -
Results show that low - rise steel frame structures can ignore fracture of bottom beam flange in the low seismic intensity area. 2 build up the finite element model. through comparing the shell element result to the test result, it proved feasible in shell element model to get the behavior of beam - column connections under monotonic and cyclic loads
2通過試驗結果與有限元模型計算結果的比較，驗證可以用殼元有限元模型來研究樑柱節點性能，實體有限元模型能很好模擬接觸問題和預拉力問題，混凝土有限元模型能夠較好的模擬混凝土結構的抗壓強度高和抗拉強度低的特性。 -
Chapter 1 introduce the development situation of the marine multi - component seismic exploration technology in our country and abroad. chapter 2 sum up the structure of the system. chapter 3 to 6 includes the design and function of the homemade sample equipment and the advantage of its key technique. just as omnidirectional geophone struture, ocean bottom cable, data acquisition unit and recording system etc. chapter 7 carefully instructs test situation of converted wave acquisition on the sea and appreciates the data quality
第一章主要介紹了目前海上多波勘探技術的國內發展概況及市場需求，第二章對整個系統的構成及各部分的功能進行了簡要的總結，第三章至第六章詳細討論了各功能模塊的原理、技術指標及創新點，包括各項關鍵技術的突破，如三分量萬向平衡裝置的理論計算及設計，數字包電路設計原理，鎧裝結構電纜的設計及系統主機的特點等。
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