pre-excitation 中文意思是什麼
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In order to improve the output quality of th e laser, we brought forward the concept of double pre - ionization, which is beneficial for the effective excitation of the laser media in the resonator
為了提高激光器輸出性能，我們提出了有利於腔內介質有效激發的雙預電離概念。 -
Therefore, either reinforcing the pre - ionization or eliminating the harmful impurity is propitious to increasing the effective excitation of the laser media in the resonator so as to increase the output power
因此增強預電離和消除有害雜質均有利於提高腔內激光介質的有效激發進而提高激光器輸出功率。 -
The present thesis is devoted to improving the excitation of the laser media ( gas mixture ) in the resonator of the high - average - power tea co2 laser by means of reinforcing the pre - ionization and eliminating the harmful impurity
本文正是從提高預電離及清除混合氣中的雜質這兩個方面研究改善高平均功率teaco _ 2激光器腔內介質（混合氣體）的激發性能的。 -
Under high air pressure, a critical problem for the normal discharge is whether enough pre - ionization can be achieved in the laser media or not. however, the cycling pumping oil steam emerging during the flow of the gas mixture and the vapor infiltrating from outside have a strong absorption of the infrared light or a role of counteracting the excitation
在高氣壓條件下能否正常放電，關鍵問題是主電極間的激光介質能否獲得足夠的預電離；而混合氣流動過程中出現的循環泵油蒸汽，及從外界滲透的水蒸汽等都對紅外光有相當強的吸收作用或消激發作用。 -
Based on netomac, a software package for power system simulation, the model and algorithm of pre - dispatch schedule in generation markets, excitation system parameter setting, and power system small signal stability anaylsis are studied in this thesis. the main work is as follows : a model of pre - dispatch schedule is proposed, whose target is to minimize the market purchasing price ( mpp ) in the whole pre - dispatch period. then according to the characteristics of pre - dispatch schedule, the model of pre - dispatch schedule is simplified to minimize the mpp in each pre - dispatch time, and a three - step algorithm of pre - dispatch schedule is designed : dealing with the optimal problem in the whole period of pre - dispatch with static planning method, solving the problem of combination of machines with pr1 method, resolving problem of optimal power flow ( opf ) with modified powell method
本文基於netomac模擬軟體，以發電市場預調度計劃模型及演算法、勵磁系統參數整定和電力系統小擾動穩定性分析為研究內容，主要做了以下工作：建立了以整個預調度計劃周期內的市場購電價格最小為目標的發電市場預調度計劃模型，並根據預調度計劃問題狀態數多、變量多、混合整數、非解析的特點，將預調度計劃模型的目標函數簡化為各時段的市場清算電價最小，設計了三段式預調度演算法：用靜態規劃法求解整個預調度計劃周期內的優化問題；用優先級法求解機組組合問題；用改進的powell法求解最優潮流問題。 -
The observe and consideration of pre - excitation syndrome in athlete ' s heart
運動員發生預激綜合癥的觀察和思考 -
The feasibility of evaluating the pre - stress with the measured frequencies of a structure under external excitation, and the influence of the mean normal stress on the mechanical properties of a column was also discussed
第七章提出了用固有頻率的測試評估預應力效果的思想，論證了其技術可行性。指出了鋼管內填物的壓力產生的初應力對臨界壓力的有利影響。
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