質量變化 的英文怎麼說

中文拼音 [zhíliángbiànhuà]
質量變化 英文
quality change
  • 質 : Ⅰ名詞1 （性質; 本質） nature; character; essence 2 （質量） quality 3 （物質） matter; substance;...
  • 量 : 量動1. （度量） measure 2. （估量） estimate; size up
  • 質量 : 1 [物理學] mass 2 （產品或工作的優劣程度） quality 3 economy （離子源的）; 質量標準 quality level...
  1. Using the data of gravity field parameter variations observed by grace, and mean sea level variations observed by satellite altimetry removed steric sea level changes calculated from the numerical ocean models, global ocean mass change is studied

    利用grace衛星觀測得到的重力場系數變化資料及重力衛星測高得到的海平面變化扣除由模式得到的熱容海平面變化，研究了海水的質量變化。
  2. Isobaric mass - change determination

    等壓質量變化測定
  3. Piezoelectric sensors, commonly known as quartz crystal microbalance, are sensitive to multiple signals such as the surface mass and the viscosity, density, dielectric effect, conductivity of the liquid

    壓電傳感技術則是一種比較成熟的傳感技術，可響應石英晶體表面的質量變化及溶液粘度、密度、介電常數、電導率等參數。
  4. Quality change of rape seed oil and rape salad oil under high temperature

    菜籽油及色拉油在高溫下的質量變化
  5. The quality of seismic data varies tremendously.

    地震資料的質量變化巨大。
  6. Based on the review of petroleum exploration in the south margin of junggar basin in the past half century, the difficulties of piedmont exploration in different phases are summarized as follows : complex structures : large variability in reservoir quality and difficulty in predicating its scale ; inaccurate image of seismic data ' s migration processing in complete trough structural belts ; requirement for high technology of drilling, etc

    摘要通過對準噶爾盆地南緣半個多世紀的油氣勘探歷史回顧，確定了山前勘探各個階段所面臨的主要難點：構造存在多解性、儲層質量變化大與規模難以預測、高陡構造地震處理準確偏移成像難度大、鉆井技術要求高。
  7. The study has investigated and compared soil physical, chemical, biochemical properties of eight stands on paired sites in mountainous regions of northeastern china, trying to look for the mechanism of soil degradation and the change trend of soil properties in different age of plantations in relations to forest productivity. the eight stands are 4 first rotation of larix olgensis plantations with different age classes, the second rotation of larix olgensis young stand, pinus sylvestris var

    本文通過固定和典型樣地，對東北山地不同生長發育階段落葉松人工林和二代落葉松幼齡林以及與二代落葉松幼齡林同一塊林地的樟子松幼齡林、天然次生林、落葉松水曲柳混交林等8個林型土壤質量進行了對比與分析，深入探討了落葉松人工林土壤質量降低的機理和不同發育階段土壤質量變化規律以及與森林生產力變化的關系，並提出了林地土壤質量調控措施。
  8. Mean sea level variations are caused by the changes of sea water density and global ocean mass, it is an important content of studying global climate change

    摘要海平面變化是海水密度和海水總質量變化的結果，是全球氣候變化研究的重要內容之一。
  9. Standard test method for calibration of atmospheric corrosion test chambers by change in mass of copper coupons

    通過銅試棒質量變化對大氣腐蝕試驗室進行校準的標準試驗方法
  10. The quality change rule and influence factors are investigated during storage of luzhou - flavor liquor, and the measures of quality stabilization are found

    摘要研究了濃香型白酒貯存過程中的質量變化規律以及影響因素，找出保持質量相對穩定的措施。
  11. Distribution of negative air ions and its relation to air quality of the yuelu mountain

    嶽麓山空氣負離子及空氣質量變化研究
  12. Finally, the thesis sets up the model of profit quality evaluation of listed companies. in the part of demonstration, the thesis chooses 40 sample listed companies in shanghai and shenzhen securities business. with these 2000 - - 2002 annual financial reports of the 40 listed companies, it obtains the proportion of the indexes by the means of factor analysis. finally, it ranks the profit quality of the 40 listed companies, analyses the reason the profit quality changes, and verifies the evaluation model by demonstration

    選取了滬、深兩市40家樣本上市公司，以其2000 ? ? 2002年的年報為資料，通過因子分析法來確定上市公司利潤質量評價體系的指標權重；按照綜合因子得分對這40家上市公司的三年利潤質量分別進行排序，分析其利潤質量變化的原因，從實證角度驗證了模型。
  13. Problems, such as quality variations, pipe and pneumatic

    問題，例如質量變化，管和空氣的
  14. Iron ores - experimental methods for evaluation of quality variation

    鐵礦.質量變化評價的實驗方法
  15. Study on changing trends of the air enviromental quality in guangyuan city

    廣元市城區空氣環境質量變化趨勢研究
  16. Various characteristics of air quality during spring festival in hangzhou urban area

    杭州市區春節期間空氣質量變化特點
  17. Visual quality of life in myopia patients after laser in situ keratomileusis

    近視準分子激光原位角膜磨鑲術后視覺生活質量變化的研究
  18. Testing of oxidic raw materials and materials - determination of change in mass on ignition

    氧化原料和材料的檢驗.燃燒時質量變化的測定
  19. On the other hand, the wavelet arithmetic can be realized through dsp, so it is widely used in the power system analysis. first, the paper introduces the standard about power quality and classifies the power quality variation problems

    本文首先簡單介紹了電能質量的標準和電能質量變化問題的分類，在總結了各種的電能質量分析方法的基礎上，提出了新的電能質量分析方法? ?小波分析。
  20. The controllers have considered all sorts of imperceptible factors affecting the servo performances in a lpmsm servo system, which include the parametric uncertainties brought by the changes of the mobile mass, frictional coefficient, the thrust fluctuations aroused by the varieties of the magnetic density distributions and the time harmonic. the h state feedback controller restrains disturbances and uncertainties to keep the robust and stable performance. the ip controller, which has the ability of rapid response, is applied to satisfy the rapid performance

    在分析雙環控制問題時，針對直線永磁同步電動機，仔細考慮了能使伺服系統性能變壞的各種細微因素，如：永磁同步直線電機動子質量變化、摩擦系數變化等造成的模型參數不確定性，電機運行期間存在磁密分佈變化、時間諧波等產生的推力擾動等，採用了ip速度控制器和h _狀態反饋控制器相結合構成直線伺服的內環控制器，並輔助設計了外環的pi位置控制器。
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