Environmental experimental requirements and experimental methods for electronic organs 電子琴的環(huán)境試驗要求和試驗方法
Petri dishes are manufactured in various sizes to meet different experimental requirements 制造出不同大小的培養(yǎng)皿,適用于不同的實驗需求。
8 . the temperature autocontrol system of middle-temperature resistance furnace was designed and assembled, which meet experimental requirements 自行設計和組裝的中溫電阻爐溫度自動控制系統(tǒng)滿足設計要求,運行效果良好。
The beam-splitter comprises three pairs of fully reflecting planar mirrors and partially reflecting planar mirrors . according to the workspace size and experimental requirement, they were placed with a distance of 195-cm between two mirrors 空間分光延時系統(tǒng)由三對全反鏡和部分反射鏡構成,根據實驗平臺大小和實際需要調整鏡片之間的距離,使相鄰光束之間的光程差為390cm。
It improves anti-interference capacity and control precision of the system, it is able to complete automatically " test of all kinds of curves of temperature and humidity by program controlling, and meets experimental requirement 試驗結果表明,本論文所采用的控制策略使環(huán)境模擬控制系統(tǒng)具有較好的抗干擾性及精度高,該系統(tǒng)能夠全自動程序控制進行各種溫、濕度曲線試驗,滿足使用要求。
So the flow field visualization in intake duct was realized . according to the experimental requirements, tow different transparent intake duct model were designed . a real-time holographic interferometry measuring system was developed, in which he-ne laser was used as light source, and a ccd ( charge coupled device ) video camera was used to grab the interferogram . a intake simulation system was build-up 本文根據研究要求,用甲基丙烯酸甲酯制作了兩種不同類型的進氣道透明模型;設計并建立了利用he-ne激光器做光源的實時全息干涉測量光學系統(tǒng);設計了一套能夠模擬進氣道在某一氣門升程時的進氣系統(tǒng),用mtv-1802cbccd攝像機對干涉條紋進行了實時采集。
As to the experimental study, a test system was designed firstly, which include propellant feed system, cooling system, controlling system and measure system . secondly, a test engine was designed according to the experimental requirement . on this basis, experiments under different working conditions were done, and the results of them were analyzed, which showed the combustion efficiency and stability 實驗方面,首先設計了針對三組元發(fā)動機推力室工作過程進行試驗的試驗系統(tǒng),包括推進劑供應系統(tǒng)與冷卻水供應系統(tǒng)、控制系統(tǒng)以及壓力、溫度、流量的測量采集系統(tǒng);其次,設計出符合試驗要求的縮尺發(fā)動機;最后針對所設計的試驗系統(tǒng)和發(fā)動機,進行了不同工況的試驗,對所得數據進行了分析處理,得到了不同工況下燃燒效率和燃燒穩(wěn)定性特性。