次陡度 的英文怎麼說
中文拼音 [cìdǒudù]
次陡度
英文
subgradient-
Owing to complicated earth ' s surface condition such as the steep stratum outcropping of front - zone of mountain or the huge thick gravel stratum ' s overlay and earth ' s surface large undulation, complicated underground geology structure developed extremely such as thrust and overthrust nappe, and violent change of the lateral velocity, etc. in front - zone of mountain there are a series of problems such as serious secondary disturbance and low signal - to - noise ratio in seismic exploration gathering
由於山前帶高陡巖層出露或巨厚礫石層的覆蓋、地表起伏大等復雜的地表條件、逆沖和逆掩推覆等復雜地下地質構造發育、速度橫向變化劇烈等原因，造成了山前帶地震勘探資料採集存在次生干擾嚴重和信噪比低等一系列問題。For once he was wrenched out of his wonted calm.
這一次，他陡然失去了慣常的寧靜態度。With the comparison of potential ravine and real ravine, it can reflect the developing tendency of ravine in this area. through positioning with gps and investigation in this area, we can divide the potential ravine of this area into three forms, that is parallel ravine area steep ripe ravine area and evenness swamp area. it can provide scientific reference for forest management and tree planting, and it is a new theory to prevent soil and water loss, and carry through the ravine controlling by people
在數字化生成的帽兒山地區dem基礎上，通過二次開發生成的潛在溝系，具有與現實溝系高度的吻合性，並通過與現實溝系的比較，能客觀的反映出該地區溝系發生、發展的趨勢，藉助于gps的定位及實際踏查研究，可將帽兒山地區的潛在溝系劃分為平行溝系區、陡坡顯溝區和平坦沼澤區三種類型，可為合理的森林經營和植樹造林提供科學的借鑒，並為防止水土流失，進行溝系治理提供了新的理論依據。In chapter 3, the elegant hermite - cosh - gaussian beams as another special case in hermite - sinusodiol - gaussian family is introduced and its propagation properties through a first - order optical abcd system are investigated. an analytical solution of the elegant herimite - cosh - gaussian beam propagating through a first - order abcd system is derived, and correspondingly, the closed - form m2 - factor, the beam width, the curvature radius and the power in bucket are presented analytically. the numerical investigations are carried out and show that the m2 - factor of elegant hermite - cosh - gaussian beam is greater than that of elegant hermite - gaussian beams and less than that of hermite - gaussian beams approximately
本文得到的主要結果可歸納為：首次用強度矩的方法研究了hermite - cosh - gaussia （ hchg ）光束，得到了hchg光束的束寬、曲率半徑、 m ~ 2因子、瑞利距離等的解析表達式；用陡峭度和pib參數去衡量hchg光束的光束質量，找到了hchg光束在傳輸過程中影響光束質量的因素並得到了變化規律；證明了hchg光束在傳輸過程中的重心和對稱性都會得到保持。After optimizing the epitaixal condition, low temperature bonding, splitting and removing of porous silicon, soi material has been successfully fabricated for the first time in china with the epitaxial layer transfer of porous silicon ( eltran ) the eltran - soi has been characterized and the results indicate that the top si layer is perfect single crystal, and its thickness is uniform
優化了外延條件，結合低溫鍵合與多孔硅的剝離技術，在國內首次用多孔硅外延層轉移技術成功地制備出了soi材料。分析表明， eltran - soi的頂層硅厚度均勻，單晶質量優良；界面清晰、陡直；電學特性優異。分享友人