高強度葉片 的英文怎麼說
中文拼音 [gāoqiángdùyèpiān]
高強度葉片
英文
high-strength blade-
Low concentration cylokinin can stop the decrease of chlorophyl content within waterlogged plant leaves and it produces a good result, but high concentration has no obvious result
低濃度的細胞分裂素即可對受濕害植物葉片的葉綠素含量的下降產生明顯的阻止效果，但高濃度時這種效果的加強不明顯。The blade inner channel cooling is a complex convection - conduction coupling problem. this thesis build a three - dimension. compressible turbulence model, and give a general solve method. with the geometrical model of the glossily rectangle straight channel, the rectangle straight channel with in - line arrays disturb plates, the rectangle straight channel with staggered arrays disturb plates, the rectangle straight channel with slant disturb plates, this thesis compute the flow and heat transfer condition when the cold air path though these channels, and gain the temperature field, pressure field, velocity filed, in addition. this thesis also analyze the influence of the different channel height, the different channel materials, the different channels, and gain the function relation between he nusselt number, friction factor and reynolds number. this thesis is emphasis on the new heat transfer enhancement structure, that is, disturb plates, with the comparison with the glossily channel and channel with pin fins, the heat transfer enhancement effect of the former is better, and the conclusion can be used in the design of aircraft blade
葉片內部通道冷卻是一個復雜的對流?導熱耦合傳熱問題，本文在分析葉片內部通道冷卻的流動與傳熱情況的基礎上，建立了三維、可壓縮紊流的物理模型，得到了通用的求解辦法；利用不帶擾流片的矩形直通道、帶順排擾流片矩形直通道、帶叉排擾流片、帶傾斜擾流片的矩形直通道的幾何模型，計算了冷卻空氣通過這幾種通道時的流動與換熱情況，得到了各種不同情況下計算區域的溫度場、壓力場、速度場；在此基礎上分析了不同的通道高度、不同的葉片通道材質對葉片內部通道冷卻的影響，並整理得到了各種通道形式下，努謝爾數和阻力因子與雷諾數的函數關系；本文重點研究了新型的葉片內部通道冷卻強化傳熱措施?帶擾流片的內部冷卻通道的強化傳熱效果，通過與光滑矩形直通道、帶針肋通道的冷卻效果的比較，表明了這種新型鮚構的優勢，對于葉片內部通道冷卻結構的設計可以起到指導的作用。( 2 ) on the leading edge, the film cooling effectiveness at the zone immediately downstream of the cooling holes is affected by blowing ratio and mainstream reynolds number, while the effects are not important in the downstream zone far from the cooling holes. ( 3 ) on the front half of pressure surface, the effectiveness increases with decreasing blowing ratio at the downstream near the cooling row and it is contrary at the downstream far from the cooling row. ( 4 ) on the rear pare of the pressure surface, the effectiveness decreases with increasing blowing ratio and does not vary so much downstream in the cases of higher blowing ratio
研究結果表明葉片吸力面端壁附近區域壓力系數分佈呈現出較強的三維特性，動葉吸力面尤其明顯；氣膜孔流量系數隨吹風比的增加而增大，在高吹風比情況下，流量系數逐漸趨于常數；在不同型面區域，冷卻效率分佈有較大的差異，而且吹風比與主流雷諾數的影響程度也不盡相同；低吹風比下，孔出口下游附近可以得到較好的冷卻，中、高吹風比下，冷氣射流在加速流動主流的作用下返回壁面進行二次冷卻，孔下游較遠區域可以得到較好的冷氣覆蓋。Arbuscular mycorrhiza can improve the ability of resisting drought from several aspects : hyphal enhances plants ' chances of absorbing water from soil ; it can improve plants ' phosphorus and another minerals ' nutrition, increase the content of chlorophyll ; observably enhance transpiration and stoma conduction ; reduce the flow of water, permanent languish point, stoma resistance ; change the balance of hormone, promote accumulation plant proline and capability of nitric reductive enzyme
叢枝菌根真菌可以通過以下幾個方面增強植物抗旱性：通過菌絲增加植物對土壤水分的吸收；改善植物的磷營養及其他礦質元素營養；能顯著提高蒸騰速率和氣孔導度；乾旱條件下降低植株葉片水勢、永久凋萎點、葉片飽和虧、氣孔阻力和恢復時間；改變激素平衡。The results of experiments shows that core column can increase flexural and shear resistant capacity and improve deformability and entirety of composite walls ; it is coordinate ductility of two composite walls joining wire or steels out - of - plane ; the seismic of composite walls joining with wire is fine than joining with steels ; the deformation of out - of - plane only affect the crack - loading, the ultimate carrying capacity and ductility in - plane nearly has no change
墻片試驗表明:芯柱可以增加復合墻體的抗彎和抗剪承載能力，改善墻體的變形能力和整體性;分別應用鋼絲網片和鋼筋連接的兩種復合墻體的平面外延性大致相同，內外葉墻協同工作良好;內外葉墻之間的連接提高了外葉墻砂漿層抗拉強度，同時也提高了復合墻體向外葉墻方向的抗推和抗拉承載力。Introducing and exploring a repair robot used for welding and grinding on the turbine blades is very useful for those plants
為了減少此項工作的勞動強度，提高維護、維修的效率，我們引進並自行開發了用於水輪機轉輪葉片修復用的專用機器人。Directionally solidified refractory metal matrix eutectic in - suit composites possess excellent mechanical and physical properties such as low density, high enduring temperatures, good room - temperature fracture - toughness and high elevated - temperature strength, therefore are expected to be used as a new type of ultra - high temperature structural materials
定向凝固難熔金屬基共晶自生復合材料由於具有密度低、承溫能力高、室溫斷裂韌性好、高溫強度高和高溫持久壽命長等性能優勢，有望成為新一代航空發動機葉片用超高溫結構材料。In order to lessen labor intensity and increase the welding and grinding precision and efficiency of the robot, introducing and exploring a repair robot used for welding and grinding on the turbine blades is very useful for those plants
為了減少人工修復的勞動強度，提高維護、維修的質量和效率，我們引進並自行開發了適合於我國國情的水輪機葉片修復專用機器人。Beside, effect of - carotene inducer ( ( 2 - diethylamino ) - ethyl - 4 - methylbenzyl - ether ) on the endogenous aba levels and drought tolerance of maize was studied. the experimental results showed that 0. 1 % ( w / w ) inducer can lightly inhibit the aba biosynthesis of maize under normal conditions, while it can improve the aba levels obviously and the drought tolerance of maize under water stress
結果表明：濃度為0 . 1 （ w w ）的2 ?二乙氨基乙基? 4 ?甲基苯基醚在正常條件下能夠抑制玉米葉片內源aba的水平，但在乾旱脅迫條件下能夠顯著增強乾旱脅迫的aba積累水平，提高玉米的抗旱性能。Abstract : in order to improve the performance of a vortex classifier, a certain type of narrow plates are fitted in the passages between the blades in the rotor cage. this measure results in reduction in the cut size and increase in classifying precision. more significant effect is observed in the case of the rotor cage with fewer blades originally fitted. it is pointed out that the reason is due to the decrease in inertia counter vorticity
文摘:在渦流分級機轉籠通道中心加裝窄葉片使產品分割粒徑減小，分級精度提高.轉籠徑向葉數較少時加裝效果明顯，徑向葉片數多時效果不明顯.分析指出，這是減小了轉籠徑向葉片間慣性反旋渦強度的緣故With the concentration of nacl increasing, activities of sod and pod in leaf increased at first then decreased as compared with under condition of control treatment and iso - osmotic nacl stress, under peg stress sod activities in leaf increased 31. 1 % and 27. 1 %, but pod activities decreased 26. 0 % and 36. 1 % respectively
隨著nacl脅迫強度的增加，菊芋幼苗葉片的sod和pod活性先上升後下降； peg處理下， sod活性分別高於對照和等滲nacl處理31 . 1和27 . 1 ；而pod活性卻分別低於對照和等滲nacl處理26 . 0和36 . 1 。Toxic effects of high acidity of acid rain and high concentrations of zn or cd on growth of brassica chinensis l and phaseolus vulgaris l were obvious, which was showed in the fact that the leaves were smaller and narrower than the contrast, and the growth of the plants were inhibited
強酸性降雨和土壤高濃度的zn 、 cd污染對小白菜和四季豆生長產生毒害作用，主要表現在葉片變窄變薄，失綠現象明顯，植株矮化，生長發育受阻。小白菜、四季豆根、葉中mda含量與zn 、 cd濃度呈正相關。分享友人