The real shape of U tube was considered, and heat transfer model of underground vertical buried tube heat exchanger was built with math methods and numerical analysis software. The soil temperature distributions around the buried tube under different working conditions were solved by programming.

考慮U型管的實際形狀，借助數學方法和數值分析軟件国产精品综合美一区二三，建立了地下垂直埋管換熱器傳熱模型久久精品免费一区二区喷潮，并通過編程求解數學模型亚洲爱爱视频，得到了系統(tǒng)短期運行不同工況下埋管周圍土壤的溫度場分布情況亚洲一区区区三区区区按摩。

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其中大型午夜福利网站、關鍵設備有1600噸和1200噸水壓機天码欧美一区免费精品、φ3000mm輾環(huán)機、9m刨邊機（2臺）在线免费a级毛片、2.5m剪板機（2臺）国产99久久久国产精品下药，δ30、δ50jizzjizzjizz亚洲视频、δ60卷板機91麻豆精品福利，φ3.4m立車（2臺），φ100mm搖臂鉆床（2臺）激情文学综合，5×5.5×15m3大型回火爐日本中文在线，數控火焰切割機A片囗交在线视频，γ射線儀www.eemii.com，膜式壁自動焊機，管板接頭自動焊機日韩一级欧美一级国产一级台湾，管屏成排彎曲機黄色视频100种在线视频，液壓脹管機等，吊裝設備最大起吊能力50噸www色小姐。

The working process and situation of the tube of constant current tube scanning circuit is introduced, which provides theoretic foundation for confirming the working situation of constant current tube .

本文論述了恒流管掃描電路管子的工作過程及工作狀態(tài)一级做a片久久毛片A片，為確定恒流管的工作狀態(tài)提供了理論依據。

The simulated results showed that in cooling tube the thermophoresis force had removing effect on the diesel engine particles,and it is possible to increase the deposition efficiency of diesel engine particles in cooling tube by rational design and control of the cooling tube structure and working parameters.

研究結果表明妓女play妓女视频欧美一区二区，熱泳力對柴油機微粒具有一定的脫除作用国产一本国产一级，通過合理設計和控制冷卻通道的結構和運行參數，可以有效地提高柴油機微粒在冷卻通道中的沉降率亚洲一级性交黄片。

Aimed at the problem of vacuum tube s working in vacuum switch applied in coal mines, the reasons and results of air escape taking place in vacuum tube s,a modified step is adopted to set up a protection unit for vacuum tube in vacuum switch.

針對真空開關在煤礦推廣應用中真空管存在的問題网站18禁，以及一旦漏氣造成的后果和原因進行了分析，提出改進措施欧美激情在线第三页，并對在真空開關增加真空管的保護裝置進行了探討18歲在线网址。

It took those factors affecting the flux of each tube into account and obtained the accurate flux of the working medium in each tube under the condition that the heat load, the parameter of structure and the flow resistance coefficient of each tube were supplied.

該方法考慮了各種因素對鍋爐本體每根管內工質流量的影響，在其熱負荷国产色一区、結構參數和工質流動阻力系數給定的條件下日本人人射，可以準確計算出每根單管內的工質流量西西WWW大胆高清视频。

Imports of liquid from entering the rotating rotor tube cavity, the role of the centrifugal force and pressure into the receiver tube, through the receiving tube speed can be transformed into a smooth, non-pulsating pressure from the export pipe emissions.

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Ndiaye劈得angry, with a tube on the bee, wasp a tube, a tube to go to heaven wasp.

劈得阿耶發(fā)火了欧美色最新精品视频在线播放，就帶著一筒蜜蜂综合自拍偷拍色，一筒馬蜂，一筒地馬蜂上天去淫秽啪啪啪黄色免费观看网站。

It is showed that MG132 significantly reduced the germination rate and tube growth. Furthermore, MG132 treatment lead to vacuolization occurred both in tube cytoplasm and generative cell. While DMSO and non-proteasome inhibitor E-64 do not have similar effects. FTIR analysis revealed that MG132 treatment markedly reduced the contents of wall-bound proteins and pectin at the apex of tube.

結果表明：MG132顯著抑制青扦花粉萌發(fā)和花粉管生長青草视频在线2020，并導致花粉管形態(tài)異常，主要表現為花粉管亞頂端出現液泡化人妻少妇一区二区三区在线，并且液泡隨著培養(yǎng)時間的延長而擴大到整個花粉管AV一级黄色录像，花粉管瀕臨死亡；而DMSO以及非蛋白酶體抑制劑E-64不產生類似結果强力打造免费在线；半薄切片結果表明欧美色色视，MG132處理后不僅花粉管細胞質發(fā)生液泡化，生殖細胞也發(fā)生液泡化欧美性爱淫淫网；FTIR分析進一步表明亚洲一级簧片在线观看，MG132處理后，花粉管頂端的細胞壁蛋白和果膠質含量大幅度下降欧美日韩免费一区二区三区视频播放。

The main aim of this thesis is to study the performance of a vortex tube in room and low temperature ranges and to find out the mechanism of the energy separation of the vortex tube, as well as to obtain from the applications of a vortex tube in low temperature ranges.

本文的研究目的就是通過理論和實驗兩方面深入分析和研究渦流管的常溫和低溫特性深夜福利国产片，探求渦流管能量分離機理的內在規(guī)律，以便為渦流管在低溫下的應用提供依據西西大胆欧美午夜视频。