lack of fusion 中文意思是什麼
lack of fusion
解釋
不完全焊透-
On data level, it is firstly explored fusing signature data from sparse - band collocated radars to obtain wider band target frequency response. the most difficult problem which restricts the fusion process is the lack of mutual coherence between the various radar subbands
在數據層，首先探索了對多個配置在同一地方的不同頻帶雷達測得的目標頻率響應進行融合，以獲取更寬頻帶目標頻率響應的方法。 -
Hence lack of fusion and slag would exist at the weld root and create a large initial crack condition.
因而未熔透及夾渣存在於焊縫棍部，並造成大的初始裂紋條件。 -
Often lack of fusion adjacent to the girder web in the transverse groove welds led to the cracking.
在靠近主梁腹板的橫向坡口焊縫處常常出現未熔透而導致裂紋。 -
Internal defects : lack of penetration, lack of fusion, slag, gas pole, carck, overheating
內部缺陷：未焊透、未熔合、夾渣、氣孔、裂紋、過熱。 -
Each pass shall be cleaned free of slag before the next pass is deposited. each weld layer shall be visually free of slag inclusions, cracks, porosity and lack of fusion
每一層焊道都應在熔敷下一層焊道前清除熔渣。每一焊層都不得有可見的夾渣、裂紋、氣孔及未熔透現象。 -
Since the western countries began the srfcs research in the eighties, theory of signal detection is used in fdi, and it was successful in some fdi functions in several types of testing aircraft. china did the srfcs research recently, but lack of the engineering fdi algorithm. because the " model based signal detection algorithm " is sensitive to the matching accuracy of the mathematics model and aircraft has prominent nonlinear aerodynamic factors, it is difficulty to upgrade the ability of fdi based on the classical signal detection theory and data fusion only
國外自八十年代開展自修復研究，一般採用基於常規數據處理的故障檢測理論來實現飛控系統故障檢測與隔離功能，現已在幾種驗證機上取得初步成果，而國內的研究尚缺乏實用的工程演算法；同時，基於常規數據處理的故障檢測精度對被檢測對象的數學模型匹配度敏感，且飛機的氣動特性在故障情況下又具有較強的非線性特性，因此，單純依靠常規的信號處理演算法難以進一步提高故障檢測的精度。 -
Multisource information fusion is a changeable, opening and nonlinear system, in which, many uncertainties are found in the form of information, dynamic features of objects in surveillance area and the processing of multisource information. for decades, although we have made remarkable progress in this field in theory and in practice, the difficulties in dealing with uncertainties and the lack of feasible mathematical foundation of information fusion have made the unified methods of describing multisource information with uncertainties and the general system model and fusion algorithms not found. therefore, the basic theoretical framework of fusion is not yet established to this day
幾十年來，雖然多源信息融合在理論上和應用中都取得了長足的進展，但是由於多源信息的復雜性及系統中存在的諸多不確定性因素，加之缺乏堅實而實用的數學基礎，從而導致這一領域至今仍沒能建立起描述多源不確定信息的統一方式以及有效的廣義系統模型和融合演算法，因而也就未能形成統一的基本理論框架，所以在多源信息融合理論研究和技術開發中，其首要問題就是如何能有效地給出多源不確定性信息的統一描述和建立反映其動態變化的系統模型。
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