焦圓 的英文怎麼說

He was entranced by illumination, and did not hear the " bughouse, " whispered by jim, nor see the anxiety on his sister s face, nor notice the rotary motion of bernard higginbotham s finger, whereby he imparted the suggestion of wheels revolving in his brother - in - law s head

這種大徹大悟使他出了神，沒有聽見吉姆在悄悄說「神經病」 ，沒有看見他姐姐臉上的焦慮表情，也沒注意到帕納德希金波坦用手指在畫著圓圈，暗示他小舅子的腦袋裡有些亂七八糟的輪子在轉動。

To resolve agc problem perfectly, the base is unit burthen control. the famous coordination control scheme - direct energy balance ( deb ) method - is still the focus of the thermal power plant control domain

而圓滿解決agc問題的基礎在於機組負荷控制，聞名於世的直接能量平衡（ deb ）法協調控制方案，一直是火力發電廠控制領域關注的焦點。

The diameter of a sphere is four times the focal length of a concave mirror cut from it

凹面鏡如果是從圓球上切下來的，圓球的直徑會是凹面鏡焦距的四倍。

The earth revolves around the sun in an ellipse with the sun at one of the foci.

地球在以太陽為焦點的橢圓上圍繞太陽公轉。

The orbits of the planets are ellipses with the sun at one focus.

行星的軌道是以太陽作為焦點之一的橢圓。

However, if you fixate at the centre, the white circles will disappear

若你把焦點集中在圓心時，白圈好像突然消失了。

Abstract : it is proved that a small circular aperture has the positive and minus focal distances, and the research experiments for small aperture glasses are introduced concisely

文摘:提出了證明小圓孔具有正、負焦距的一種方法，簡要地介紹了關于小孔眼鏡的實驗研究

A beam of light ( typically ultraviolet light from a mercury arc lamp ) shines through the chromium mask, then passes through a lens that focuses the image onto a photosensitive coating of organic polymer ( called the photoresist ) on the surface of a silicon wafer

一束光（通常是汞弧燈發出的紫外光）先穿透鉻光罩，然後通過透鏡把影像聚焦在晶圓表面的有機高分子感光塗料（稱為光阻劑） 。

If the objective lens is closer to the compact disk than the focal length of the object lens, then the cylindrical lens creates an elliptical image on the photodetector array

如果物鏡與光盤之間的距離短於物鏡的焦距，柱面透鏡就會使在光電探測器陣列上的成像變成橢圓影像。

If the objective lens is further away from the compact disk than the focal length of the object lens, then the cylindrical lens again creates an elliptical image on the photodetector array

如果物鏡與光盤之間的距離長於物鏡的焦距，柱面透鏡也會使在光電探測器陣列上的成像變成橢圓影像。

Of course, if the disk is right at the focal length of the objective lens, then the cylindrical lens does not affect the image and it is perfectly circular

當然，如果正好處於物鏡焦距位置，柱面鏡就不會影響到光電探測器上的成像，因而會獲得一個完美的圓性影像。

On the ground of educative theory, this paper exposits connotation and characteristic of project - based learning and why we should also enforce project - based learning in high school. as far as substance of project - based learning and objective circumstance what it should have are concerned, it points out the practical ability. at last, based on that university physics education has relatively longer cycle, it proposes stage pattern for enforce project - based learning and give two concrete cases, which discuss capacitance of confocal oval - shaped stylar capacitor and potential distribution of charged conductor of surface being uniparted hyperboloid

本文在具體的教育理論指導下，闡述了研究性學習的內涵及特點；在大學物理中實施研究性學習的意義；以及就研究性學習的實質和所需具備的客觀條件而言，論述了研究性學習在高校中實施的可行性；並根據大學物理教育具有周期性相對較長和專業循序漸進的特點，提出了研究性學習的階段性模式，並給出了具體的實例，利用保角變換法討論了共焦橢圓柱形電容器電容及單葉雙曲面帶電導體的電位分佈。

( 2 ) the causation that the caustic phenomena of electromagnetic wave propagation in two - dimension concave reflectors occurs and the types of singularities in caustic fields are investigated, and the conclusion that there are two types of singularities ( fold and cusp ) in caustic fields in two - dimension concave reflectors is obtained ; by symplectic geometrical method, formulations of computing wave fields in and far away from caustic fields in two - dimension concave reflectors are deduced, and the results are plotted in pictures. ( 3 ) the cause of the caustic phenomena of electromagnetic wave propagation in three - dimension concave reflectors and the types of singularities in caustic fields is discussed, and the conclusion that there are three main types of singularities ( fold, cusp and swallowtail ) in caustic fields in three - dimension concave reflectors is obtained ; by symplectic geometrical method, the formulae of computing wave fields in and far away from caustic fields in three - dimension concave reflectors are deduced. particularly, the wave fields in ellipsoid concave reflector are computed, and the results displayed in special sections are given

論文主要包括三個方面： （ 1 ）分析了凹面反射的焦散現象，給出了不同凹面反射的焦散圖； （ 2 ）分析了二維凹面反射波動場焦散現象產生的原因及焦散區奇性的種類，得出了二維凹面反射波動場焦散區奇性主要有折疊（ fold ）和尖點（ cusp ）兩種的結論，利用辛幾何方法構造了圓錐曲面反射波動場非焦散區和焦散區的通用計算公式，並給出了圓柱面、橢圓柱面及雙曲柱面反射的計算結果； （ 3 ）分析了三維凹面反射波動場焦散現象產生的原因及焦散區奇性的種類，得出了三維凹面反射波動場焦散區奇性主要有折疊（ fom 、尖點kusp和燕尾k ）三種的結論，提出了利用辛幾何方法計算三維凹面反射波動場非焦散區和焦散區的計算方法，並給出了三軸不等橢球體凹面反射波動場的計算結果剖面圖。

The slow - wave characteristics neglecting and taking account of space harmonics ( sh ) for periodically iris - loaded confocal elliptical waveguides are analysed, and the dispersion equation and the mean coupling impedance of this structure are obtained by

分析了周期膜片加載共焦橢圓波導，在考慮空間諧波和不考慮空間諧波兩種情況下的慢波特性。應用場匹配方法得到這種結構的色散方程和平均耦合阻抗。

In this paper, the high - temperature low - cycle fatigue life and fatigue crack propagation life tests are carried on the cylindrical axial symmetry specimens having precrack or non - precrack with different types of notches of 16mnr steel in common use in the petrochemical industry contacting coke drum equipment, the stress / strain and the range of stress / strain of dangerous points are received through stress analysis of the specimens using finite element program under multi - axial stress state. at last, the equations of evaluating the high - temperature low - cycle fatigue life and the fatigue crack propagation life are found through using the least - square regression method

本文採用無預裂紋和帶預裂紋環狀缺口圓柱形試樣，進行了石化焦炭塔設備常用材料16mnr多維應力狀態下不同缺口形式的高溫低周疲勞總壽命試驗及裂紋擴展壽命試驗，並利用有限元程序對試樣缺口周圍及裂紋尖端附近進行了軸對稱多維應力狀態下的應力、應變場分析，來評價材料不同條件下的高溫低周疲勞總壽命和裂紋擴展壽命，最後利用最小二乘回歸方法，得到了該材料高溫低周疲勞總壽命和裂紋擴展壽命評價方程。

For improving the quality of traditional chinese roasted green tea, fresh leaf spreading, steaming to de - enzyme, and dehydrating for new - type roasted green tea process were studied

摘要針對當前出口炒青綠茶品質存在的「色澤不綠、苦澀味重、有煙焦味」等突出問題進行鮮葉攤放、蒸汽殺青、脫水等關鍵工藝研究，綜合提出長炒青綠茶、圓炒青綠茶加工新工藝。

Its fundamental is that the ray emitted from a focus ( front ) of elliptical will flock together on the other focus ( back ) by the reflection on the elliptical surface. we set a scatter aperture on the back focus

橢圓柱面的前焦線上是射線源，晶體固定在一個橢圓基底上，其表面構成一橢圓柱面， x射線經晶體衍射后會聚於後焦線上。

The body travels in an ellipse, the fixed point being at on focus. the speed is greatest when body is near the focus, less when it is farther away

物體沿著固定點在一個焦點上的橢圓軌道運動。當運動物體靠近這一焦點時其速度最大，而當它遠離時則速度變小。

In the method dfd ( depth from defocus ), feasibilities of restoring images from defocus images and estimating the focused position are discussed and confirmed

離焦深度法估計離焦距離或者進行圖像恢復的依據是成像系統的點擴散函數及它所產生的模糊圓。

The results of computer simulation show that both the radius of disk and the depth of focal length decrease as increasing incidence wavelength, meanwhile, the intensity of disk is enhanced

數值計算了圓形透鏡的色散，結果表明：焦斑的半徑和焦深隨入射波長的變大而減小，光斑的強度隨入射波長的變大而增強。