free free transition 中文意思是什麼
free free transition
解釋
自由- free : adj （freer; freest）1 自由的，自主的；自立的。 a free action 自由行動。 free competition 自由競...
- transition : n 轉變，演變，變遷，變化；飛越；過渡期；【音樂】變調，轉調；【修辭學】語次轉變；【語法】轉換；【...
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Abstract : positron spectroscopy is a new and sensitive microanalytical probe for characterization of polymer microstructures. we report recent advances in this area, including studies on the free volume properties, structural transition, miscibility of blending polymers, physical aging, doping of functional polymers, interfacial interaction of multiphase polymers, etc
文摘:簡要介紹了近年來正電子譜學在聚合物微結構研究中的主要應用及進展.大量實驗事實表明，正電子譜學是表徵高聚物微結構的極靈敏方法 -
In the transition from lead to lead - free, for the manufacturers of electronic products, there is expected to be a period when lead and lead - free materials will be used within the same mounting process, the mixed solder joint which formed in this situation is very complicated
摘要在從有鉛向無鉛轉換過程中，電子產品製造商不可避免會碰到同一組裝過程中有鉛和無鉛同時存在的混合情況，這種情況下形成的混合焊點是很復雜的。 -
Due to restriction with the array aperture transition time, traditional phased array radar works under relative narrow signal bandwidth, so this restricts the application of phased array radar in the field where high performance is demanded. however, optically controlled phased array radar ( ocpar ) adopts the photoelectron technology, counteracts the aperture transition time via the method of optical true time delay ( ottd ), so it can realize wide instantaneous bandwidth and squint - free operation ; meanwhile, it can realize the miniaturization of phased array radar and has super anti - electromagnetism interference capability
而光控相控陣雷達採用光電子技術，通過光實時延遲的方法來抵消孔徑渡越時間，可以實現相控陣雷達的寬帶寬角掃描;同時也可以使得相控陣雷達小型化，並具有強的抗電磁干擾的能力;另外，由於光纖傳輸具有損耗低、頻帶寬等固有優點，採用光纖連接雷達天線和雷達控制中心，可以使兩者的距離較採用同軸電纜有較大的提高，更有利於保護雷達控制中心。 -
Comparison of the diffusion coefficients calculated by this new model with the present experimental data, including benzene, toluene, ethylbenzene in polystyrene ( ps ) and poly ( methyl methacrylate ) ( pmma ) are performed, calculation results in this study are in good agreement with experimental data, for the correct estimation of the hole - free volume change above and below the glass transition
以芳香族溶劑苯、甲苯、乙苯在玻璃態聚苯乙烯和聚甲基丙烯酸甲酯中的擴散系數為例對模型進行驗證，理論計算結果和實驗值取得良好一致。 -
The research evolvement of the phase transition of lead - free nbt - based relaxor ferroelectrics
3基弛豫鐵電體相變的研究進展 -
The principle of the predigestion in geometry modeling is omitting the function part and the non - load - carrying process structure, and to the big and transition arc, the curve is replaced by straight line using the thought of curve and free - surface segmentation. the physical characteristic of the digital model reflect on remaining the main mechanical characteristic of the objects. the shell element model is used in strength analysis, stiffness analysis and dynamic analysis
文中幾何建模的簡化原則是，略去功能件和非承載的工藝結構，對于大圓弧和過渡圓弧，以曲面分塊和曲線分段的思想進行適當的以直代曲;數模的物理特性反映在最大限度地保留對象的主要力學特性;在強度、剛度和動態分析中採用殼元模型，輕量化設計中採用梁元模型;材料特性根據所用材料定義其主要性能參數。 -
In this paper, molecular dynamics simulation is carried on the nanometric cutting of defect - free monocrystalline silicon. based on simulations, a reasonable explanation is given to the forming mechanism of chip and surface machined in the cutting process of monocrystalline silicon. moreover, the feasibility of brittle - ductile transition of monocrystalline silion is studied with the method of first principle stress
對內部無缺陷的單晶硅的納米切削過程進行了分子動力學模擬.通過模擬結果，對單晶硅納米切削中的切屑形成過程和加工表面的形成過程做出了合理的解釋.並用第一原理應力計算方法對單晶硅納米切削過程中的脆塑轉變的可行性進行了研究 -
Keen price competition during the transition to the quota - free era resulted in a slight drop in profit margin
在市場逐步達至無配額的過渡時期，價格競爭變得比以往激烈，導致邊際利潤輕微下跌。 -
The manufacturability and reliability problems involved during the lead - free transfer process and transition stage were discussed, including its influence on the components / devices, pcb and solder alloy and the compatibility problems
摘要闡述了在無鉛轉移過程中涉及的可製造性與可靠性問題，包括無鉛轉移對元器件、印製電路板與焊點的影響以及它們相互之間的兼容問題。
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