高亞音速 的英文怎麼說
中文拼音 [gāoyǎyīnsù]
高亞音速
英文
high subsonic speed-
This airplane can go out to high subsonic speeds very easily without using afterburner
這架飛機能夠很輕松地在不打開加力的狀態下飛到高亞音速。The method of wing shape optimization of space shutlle has been developed with penalty function approach in which the objective function is the mass of the wing and the constraints are the hypersonic re - entry flight cross range, lift / drag ratio, and subsonic flight lift / drag ratio, the margin of the longitudial static stability and the magnitude of the horizontal landing speed etc
摘要介紹了在滿足高超音速再入橫向機動航程，高超音速再入飛行時的升阻比，亞音速進場飛行時的升阻比，縱向靜穩定性裕度和水平著陸速度等飛行性能設計要求下，用罰函數法尋求使航天飛機機翼質量為最小的外形優化方法並給出了算例。The coatings deposited with a new subsonic flame spraying possess high bonding strength, low porosity and is low costly, at the same time, it is applied to the worksite of boiler tubes specially. the coatings applied to water wall tubes were deposited by subsonic flame spraying in this study
本課題採用了一種新型亞音速火焰噴塗技術制備鍋爐水冷壁管道塗層，其塗層不僅結合強度高、孔隙率較低，而且塗層制備的成本低，特別適用於鍋爐水冷壁管的現場噴塗。The main results are : supersonic region and subsonic region can co - exist in flow path simultaneously, subsonic flow is insignificance for engine performance ; total pressure of primary rocket should be decreased when mach number is increased. in the experimental aspect, some components of ejectorjet experimental system were improved, ejectorjet experiments using alcohol as secondary fuel were conducted
由數值計算獲得的結論為：引射火箭內的一般流態為超音速區與亞音速區共存，亞音速區不具備做功能力；飛行馬赫數增大，引射火箭內更易於產生壅塞；為了獲得最佳的性能，隨著飛行馬赫數的提高，應當降低一次火箭的工作壓強。The comparison showed that : ( l ) farassat 1a formula is the simplest one and work well for the subsonic rotor. ( 2 ) both kirchhoff formula and k - fwh formula can predict the nonlinear noise generated by transonic rotor ; ( 3 ) when the surface is not positioned in the linear region, kirchhoff approach for rotating integration surface could lead to substantial error, but k - fwh formula can still work well
數值研究表明： farassat1a公式在預測線性噪聲方面簡單有效，適用於亞音速旋翼的噪聲預測； kirchhoff公式和k - fwh公式均能夠預測跨音速旋翼聲場，並且具有較高的精度；當聲源面位於流動非線性時， kirchhoff公式會導致很大的計算誤差，而k - fwh公式不存在這樣的問題。Each room has access to high speed wide band internet connections ; and a miniature bar and a personal safe cabinet that will ensure your security while enjoying the beautiful scenery. room services : domestic, asian, pacific, european and american satellite television channels, international direct dialing telephones, access to high speed wide band internet connections, miniature bar, personal safe cabinet
所有的房間都配有豐富的國內亞太及歐美衛視電視頻道獨立溫控室內音響國際直播電話高速寬頻上網介面迷你酒吧私人保險櫃讓您在絕美的風景中同時享受便捷，絕對物超所值。Here is what they now generally expect from an event the scale of those that struck long valley and yellowstone : instead of a slow leak of red - hot lava as is seen creeping down the sides of kilauea volcano in hawaii, these eruptions feature supersonic blasts of superheated, foamlike gas and ash that rise buoyantly all the way into the earth ' s stratosphere, 50 kilometers high
對于造成長谷與黃石公園的那些爆發，或是相同等級的現象，目前他們普遍的看法是：這些爆發不像夏威夷奇勞亞火山緩慢滲出的紅熱巖漿、沿著火山側蜿蜒流出；它們的特色是以超音速的沖擊波，噴出極熱、泡沫般的氣體與火山灰，這些物質極易進入地球大氣的平流層，上升到50公里的高處。Unless the pioneer of online retailing can provide downloadable media it risks being “ disintermediated ” ? rather as only a decade ago high - street bookshops, music and video stores were disintermediated by amazon itself
這位網上零售業的先驅得推出可下載媒體服務，否則它就會冒「被去中介化」的風險? ?如同10年前，亞馬遜如何對待高速公路邊的書店、音樂店和視頻商店的一樣。分享友人