The aim of this paper is to discuss the effects of structure parameters on field emission performance , in order to fabricate excellent field emission cathodes 本文的工作旨在研究探索尖錐場發(fā)射陰極中各結(jié)構(gòu)參數(shù)對陰極發(fā)射性能的影響,以制作出性能優(yōu)良的場發(fā)射陣列陰極。
By varying the main structure parameter of propeller and multi - parameter optimization calculation , the regularity of flow field and the most suitable parameters are got 介紹了通用流體力學軟件fluent的使用方法和技巧。改變攪拌槳的主要結(jié)構(gòu)參數(shù)值,進行多參數(shù)優(yōu)化計算。
Structure parameter of main parts for adjusting quality production line of support steel is introduced , and reliable basis of adjusting quality design for special - shaped steel is provided 介紹了支護鋼調(diào)質(zhì)生產(chǎn)線中主要部件的結(jié)構(gòu)參數(shù),為其它異類鋼調(diào)質(zhì)線設計提供了可靠的依據(jù)。
Secondly , analyzing force on ground wheel indicates that wheel slide can be influenced by ground wheel structure parameters , such as its vertical load , width , diameter , and height of clutching board 據(jù)此設計了可對滑移率進行測量的地輪裝置。根據(jù)研究目的,確定了地輪滑移率的測試方法。
Abstract : the paper presents the research into the stress state of roller teeth using fem ( finite element method ) . the results show that different structure parameter causes a change in roll stress 文摘:采用有限單元法對軋輥輥齒的應力狀態(tài)進行了研究,得出了不同結(jié)構(gòu)參數(shù)對軋輥應力變化的影響。
The effects of various structure parameters and fins arrangement of the three dimensional extended surface on heat transfer performance in the 3 - d ift have not been studied systematically 特別是在三維內(nèi)肋管肋形結(jié)構(gòu)尺寸,肋排列形式等影響管內(nèi)對流換熱特性因素的系統(tǒng)研究工作還有待于進一步的完善。
Based on the analysis of frequency characteristic and direct current characteristic , optimized design principles and the relationship between electrical parameter and structure parameter are given 首先,通過分析sigehbt直流特性和頻率特性,給出了sigehbt器件電學參數(shù)與結(jié)構(gòu)參數(shù)的關(guān)系以及優(yōu)化設計原則。
Both the viscous friction and axial heat conduction are included in this model . the analysis presented the optimal regenerator structure parameters of a coaxial traveling - wave thermoacoustic prime mover 熱聲熱機的優(yōu)化設計在熱聲網(wǎng)絡模型的基礎(chǔ)上,設計和優(yōu)化系統(tǒng),調(diào)節(jié)系統(tǒng)中的聲場相位,提高熱聲熱機的效率。
First , according to the actual organic static induction transistor establishing the physical model and selecting appropriate structure parameters , solves poisson ' s equation by adopting finite element method 首先根據(jù)實際制作的有機靜電感應三極管建立物理模型,選取合適的結(jié)構(gòu)參數(shù),采用有限元法求解泊松方程。
The normalized modefield and power proportion inside the core are also studied under different structure parameters of triangular segmented core with step ring optical fiber by this method 用此方法研究了帶階躍環(huán)的三角型分段折射率分布光纖中歸一化模場半徑與芯層傳輸功率及總傳輸功率比值隨光纖不同結(jié)構(gòu)參數(shù)的變化規(guī)律。