均勻加速度 的英文怎麼說
中文拼音 [jūnyúnjiāsùdù]
均勻加速度
英文
co tant acceleration-
Best concentration of ions is 1. 5mol / l and dispersant pvp monomer 0. 8mol / l. spin - coating speed, which affected the quality of limn2o4 film greatly, was also studied. it demonstrated that smooth limn2o4 film without cracks could formed under 2000 rotates / min with the solution cion = 1. 5mol / l, cpvp = 0. 8mol / l, what ’ s more, fewest spin - coating times were needed at that speed
實驗結果表明:採用離子總濃度溶液為1 . 5mol / l ,聚乙烯吡咯烷酮單元濃度為0 . 8mol / l的溶液旋轉塗覆時,轉速在2000轉/分鐘時最佳,所得到的濕limn204薄膜平整光滑均勻,加熱后無龜裂現象。Firstly, simulate flow field of rear smoke channel, plot velocity magnitude and ash concentration distribution in section of entry of heat pipe air preheater, compare with data which were measured in guiyang power station, verify simulation to be reasonable and right. secondly, simulate all kinds of factors which affect flow field ' s uniformity such as length, thickness, location of diffluent board, ash concentration, ash diameter, and so on, find the chiefly factors. thirdly, install guide board in curve channel in rear smoke channel, then simulate its " flow field, plot velocity magnitude and ash concentration distribution
在此基礎上模擬在冬夏兩季不同情況下,不同流速對熱管空氣預熱器壁面溫度的影響;然後對影響整個流場分佈的各種因素:包括分流板長度、厚度、偏離中心流道位置的偏離度、飛灰濃度、飛灰粒徑等因素進行數值模擬;最後提出在分流煙道轉彎處加裝導流板,並模擬加裝導流板后的流場分佈,得到下級空氣預熱器出口、熱管空氣預熱器進口處的斷面速度場分佈、濃度場分佈,以論證加裝導流板能達到流場均勻化的作用。The moderate supersonic carbon added to the mold flux for ultra - low carbon steel is used to stay the melting speed as skeleton. then the mold flux coils have the good adiabatic, insulation and even flow property. at the same time it cause the carbon increase in the steel slabs and the operation of the ultra - low carbon is affected at last
超低碳鋼連鑄結晶器用保護渣中,外加中超碳黑作為骨架降低熔化速度,使保護渣具有良好的絕熱保溫性、均勻流動的潤滑性,但同時卻會引起鋼鑄坯的碳增量,最終影響超低碳鋼的成功操作。Lifting and lowering of the pringting arm of this machine is vertical, therefore, in case of half - tone printing, presence of screen wire and consistency of aberration are improved ; in case of spot printing, stability and uniformity of inking are enhanced ; fine adjustment and lock of the worktable is independent of each other, so positioning error caused by lock of the worktable can be controlled ; height and pressure of the printing blade and ink - returning blade can be stepless - regulated separately, which improver printing quality and service life of half - tone ; printing travel and half - tone fixing mechanism can be fast adjusted, which is suitable for printing area with different size
本機印刷大臂升降為垂直升隆式,網線版印刷時網線表現率為色差一致性得到提高,實地版印刷的施墨穩定性及均勻性得以加強;工作臺微調與鎖緊獨立,因工作臺鎖緊而帶來的定位誤差得以控制;印刷刀、回墨刀高度及壓力均可單獨無級調節,提高了印刷質量和網版的使用壽命,印刷行程和網版固定機構大小可快速調節,方便不同規格的印刷面積。Adopted far infrared metal heating tube, fast heating and energy saving
採用遠紅外線金屬電熱管加熱、熱風循環,加熱速度快、溫度均勻、省電。Increasing the cooling velocity and additions of nb and zr can refine the a - fe dendrites in as - cast alloys, decrease the amount of a - fe phase after homogenization treatment. as a result, the magnetic. properties were improved
提高鑄錠的凝固速度及添加nb和zr可以促進鑄態合金內- fe相的晶粒細化及均勻分佈,減少均勻后殘留的- fe相,提高均勻化的效率和質量,從而提高磁體的矯頑力。Several key techniques of carving and milling machine cnc system are deeply studied they include : the transformation, data rebuild and interface design of huge volume nc program produced by cam ; the algorithm of cubic parametric spline pre _ interpolation and high speed real time interpolation in the cnc system, which. will gain a much higher surface precision and cutting speed ; methodology and algorithm of movement velocity acceleration control on a real time forecast _ and _ prejudge basis is designed. therefore, a smooth movement is insured. the shake and noise problem caused by non _ uniform pules for driving stepping or servo motor is solved by an improving algorithm to generate uniform pules
同時,本文對基於統一的pc平臺的雕銑機數控系統中的幾項關鍵技術進行了深入的研究,包括: cam生成加工程序的傳送、接收、讀取及其加工鏈表的生成和實時重構;對cam生成的離散數據進行三次參數樣條插值和基於累加弦長的三次參數樣條插補控制,保證加工工件表面的精度和光順性;設計具有「前瞻」功能的自動升降速控制方法,保證加工過程的平穩性;通過脈沖均勻化,有效地解決加工過程中因為脈沖不均勻而引起的震動問題。The x - ray diffraction, scanning electronic microscope and the squid were used to characterize the properties of the mgb2 core in mgb2 / fe tapes and wires. the effect of the proportion of mg, b and sic as well as the sintering parameters on the phase formation, microstructure and the critical current densities of mgb2 / fe tapes and wires was discussed in details. the results showed that the high purity of mgb2 core could be synthesized by both the traditional vacuum sintering and the sparking plasma sintering and the vacuum sintering environment restrained the oxidation of mg effectively
相對于傳統真空燒結, sps燒結方式成相速度快、樣品晶粒細小均勻、 mgb2超導芯緻密性好、晶間連接優良,因而sps燒結樣品的臨界電流密度明顯高於傳統真空燒結樣品,其中未摻雜的帶材樣品經過sps800 , 15分鐘燒結后,自場下的臨界電流密度jc值在10k時達到8 . 64 105a / cm2 ,而且隨著測量溫度和外加磁場的增加, sps燒結樣品的臨界電流密度下降率比傳統真空燒結樣品緩慢,在20k ,自場時為5 . 97 105a / cm2 , 20k , 3t時,臨界電流密度值仍大於104a / cm2 。Diamond ( diamond glass ) with a large polishing powder particles to the use and performance : ultrafine polishing powder particle size, particle size uniform, cut power and polishing speed, high - yield diamond, easily washable, is essential to the processing of diamond polishing materials
信息描述:水鉆用大顆粒拋光粉的用途及性能:拋光粉粒度超細,粒度均勻,削力強,拋光速度快,水鉆成品率高,易清洗,是水鉆加工必不可少的拋光材料。Meanwhile, the fracture was accelerated due to the uneven surface hardness and the unreasonable distribution of the hardening layer on the crankshaft, and the bad lubrication condition in service
同時軸左頸表面硬度不均勻、淬硬層分佈不甚合理,工作過程中潤滑條件差,加速了曲軸的斷裂。By stirring water with the impeller, splash water to the air evenly and widely, strengthen the pond water ' s flowing circulation, make pond water dissolve into oxygen and death of fish, shrimp and eel, raise the breeding density, quicken the growth so to achieve high and stable yields
通過葉輪攪水,把水均勻而彌散地潑向空間,加強池水流動循環,使池水溶入氧而稀釋和排出有害物質,增加水中的溶氧量,改善水質,防止魚蝦鰻浮頭死亡,提高養殖密度,加速生長,從而達到高產穩產。Because it is easy to obtain good uniformity along thickness of film with the use of hotplate, hotplate is very commonly applied in thick film
由於熱板易於達到在膠的厚度方向快速均勻烘乾等要求,目前越來越多地採用電熱板加熱的方式。Based on comparison of several technical schemes, the method of sand bedding pre - elevating and step water - filling pre - compressing is adopted. so the dissertation is consist of two parts : ( 1 ) the applicability study for the method of sand bedding pre - elevating and step water - filling pre - compressing, including numerical analyses for the thickness of sand bedding, the consolidation, settlement and stability of foundation, drainage, possibility of foundation liquefaction under seismic loading, et al. ( 2 ) monitoring at construction stage and checking the effect of foundation treatment, including the measurements of the settlement velocity and non - uniform settlement of ring beam under the tank, pore pressures and horizontal displacements in foundation, the pressure distribution at the bottom of oil tank and the strength increase of soils
通過多種技術方案比較,最終選擇了技術先進的砂墊層預抬高分級充水預壓法,論文工作主要由以下兩部分組成: ( 1 )砂墊層預抬高分級充水預壓法的適用性研究,其中包括砂墊層厚度、地基沉降與固結度、地基穩定性、降水、地震作用下砂土液化的可能性等方面的計算分析; ( 2 )施工監測與地基處理效果檢驗,其中包括油罐環梁基礎沉降速率與不均勻沉降程度、各分級充水加載階段地基超靜孔壓與深層水平位移、油罐底板壓力分佈及地基土強度增長等方面的實測與數據分析。The results indicate that the regenerative ladle baking with high temperature air combustion techniquecan speed up ladle heating rate and increase the temperature uniformity of lining
結果表明,採用助燃空氣煤氣雙預熱的蓄熱式燃燒技術能夠有效地提高鋼包的烘烤速度和加熱均勻性;氣體預熱溫度越高,包襯終點溫度越高,溫度均勻性也越好。In addition, there will be some asymmetrical condition for shelling ; if the shell speed is different, there will be crusting phenomenon and then damage precision of shell thickness
另外一些覆膜砂還可能出現結殼厚度不均勻的現象,如果結殼速度不同,將出現覆膜砂加熱過程中的「起皮」現象從而破壞了結殼厚度的準確性。According to thermal state similitude model experiment of the langya mountain hydropower station, we adopt different velocity of air ventilation and exclude air proportion of upriver and downriver, this paper contrast the air distribution of the dynamo floor on each method, and educe the best projects of arch crest supply air that adapt to langya mountain hydropower station ’ s dynamo floor : g = 17. 4 10 ~ 4m ~ 3 / h, 22 vents, d = 600mm, the scale of volume 1 : 3, t0 = 16. 9. it ’ s also thought that improved any side of volume can reduce its temperature. when study on the air supply of langya mountain hydropower station ’ s underground dynamo floor by cfd software, it proved that cfd software is correct when compare with model experiment. when arrange the number of 5 kinds of vents, it concluded that the number of vents 14 to 22, it can ’ t change velocity, in 36 to 40 can lead to reduction of velocity. when vent in 14 to 36, the parameter kt doesn ’ t change, when the number is as large as 36, kt reduces
在此基礎上,模擬了5種風口布置方案和送風量的改變對發電機層溫度場和速度場的影響,獲得了些可供參考的結論:在風量和送風速度不變的條件下,風口個數在( 14 ~ 22 )小范圍變化時,工作區平均風速基本不變,大幅度增加風口個數( 36 ~ 44 )就會導致工作區平均風速的降低,風口數在14 ~ 36之間對工作區的溫度不均勻系數影響不大,當風口數> 36時,溫度不均勻系數隨著風口數的增多而變小,速度不均勻系數一直隨著風口數的增加而減少;在風口布置和尺寸不變的情況下,送風量變化時,工作區平均溫度隨送風量增大而降低,平均溫度的降低量逐漸趨于減少,能量利用系數先是隨著送風量的增加而增大,后隨送風量增加而減少。But it is impossible for the traditional electroforming to be widely used due to the long process time, the poor metal distribution which is often seen. nano metal has special performance of mechanics and physics, but the making of nano metal block is difficult, and it ' s making method is not perfect, so the study of nano metal block is very difficult. man pay more attention to rapid prototyping which is a new machining method, but to make metal accessory using rapid prototyping is very difficult, it restricts development of rapid prototyping
目前電鑄技術存在著加工時間長,鑄層均勻性差等缺點,嚴重製約著電鑄技術的應用與發展;納米金屬具有特殊的力學和物理性能,但是納米金屬塊體的制備有一定的難度,而且制備方法也不成熟,因此對納米金屬塊體性能的研究有一定的難度;快速成型作為一種新型的加工方法,越來越受到重視,但現在的快速成型技術對製造金屬零件有很大的難度,這也是制約快速成型技術快速發展的一個瓶頸。Large - diameter web wheel lay out pulp to guarantee even thickness of cotton core under high - speed operation with adjustable amount of sap
大直徑網輪鋪放絨漿,高速運行時棉芯厚度均勻。高分子施加量可調。There are two parts in this paper : firstly, a set of single doppler velocity models are presented for typical ambient windfields that include those of being uniform horizontally, macroscale convergence and divergence, which overlap warm and cold advection. which are marked by different signatures in the single doppler velocity field. the models proposed can help users identify useful information from the dopple velocity patterns
本論文包括兩個部分:第一篇通過對典型風場的單多普勒天氣雷達徑向速度圖象進行模擬,典型風場包括水平均勻一致的風場、非均勻水平風場的大尺度運動的輻合輻散風場以及大尺度運動的輻合輻散風場與冷暖平流的迭加等。The maximum transmission efficiency of two - stage three - ring gear reducer is 93 %, and the load distribution non - uniform coefficient is less than 1. 1, and its vibration acceleration is less than acceleration of ordinary three - ring gear reducer that has the same properties
該兩級三環減速器的傳動效率達93 %以上,載荷分配不均勻系數小於1 . 1 ,振動加速度值也小於同等傳動能力的一般三環減速器。分享友人