concave-concave 中文意思是什麼
concave-concave
解釋
雙凹的- concave : adj 凹的，凹面的 （opp convex）。n 凹，凹線，凹面（物）。 the （spherical） concave 〈詩〉蒼穹。v...
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Our " standard " product line includes cylindrical lenses, lenses, plano - convex cylindrical lenses, plano - concave cylindrical lenses, spherical lenses, aspherical lenses, prism, filter, window, achromatic lenses and reflector etc
我們的生產包括:柱面鏡球面鏡非球面鏡棱鏡平鏡膠合鏡透鏡反射鏡濾光片偏光鏡等。 -
Embrace air plus - our most popular model, the concave - design provides special stability. the comfort control air chamber lets you adjust lower back support to your precise comfort level. vertical adjustment of the comfort chamber is possible when air has been removed
擁抱空氣加強型- - - -我們最受歡迎的型號，凹面設計構造份外穩固，安舒調控氣囊讓你按你的準確舒適度調校腰部背靠，抽出空氣后安舒氣囊可上下調校。 -
Based on the previous research on the portal crane administration, one standpoint put forward in this paper is idea that is on the foundation of reliability in this paper, two viewpoints take shape when reason is analyzed, that is fatigue break and appearing the flaw that will extend. what is the fatigue break ? ( this phenomenon is always happen in some place ), the fatigue is that board appears apophysis and concave when the board is pressed. so that the board ability of bearing the weight of load will descend
本論文建立在已有的港口裝卸機械管理的研究基礎之上，進一步提出了以可靠性為基礎的港口裝卸機械的管理思想，已有的研究表明，港口機械設備破壞主要由於兩個原因，第一是穩定性問題，特別是構件的局部穩定性，所謂穩定性是指：在板的平面內，板受到平行於板面的壓力作用，使板發生隆起、內陷等凹凸不平的結果，從而使板受載能力減弱；第二是結構出現疲勞裂紋及其擴展，這是由於設備長時期運行，而造成設備某些部位出現裂紋並得以擴展，使設備承載能力下降。 -
The ancient greeks used lenses or concave mirrors to concentrate the sun ' s rays and burning glasses were also used by mexican aztecs and the chinese
古希臘人使用透鏡或凹面鏡聚集太陽光線並且這種方法也被墨西哥阿芝臺克和中國人使用。 -
For a number of historical and technical reasons, hockney envisions a camera obscura based not on a lens but on a concave mirror ( curved inward like a shaving or makeup mirror ), which can also project an image onto a screen
由於歷史與技術上的若干理由，霍克尼推想出一種不採用透鏡、卻利用凹面鏡的暗箱（凹面鏡是一種內凹的鏡子，比如刮鬍子或化妝時用的鏡子） ，這種鏡子也可以把影像投射到屏幕上。 -
Check the state of the straw separated : if the straw is seriously broken, the cylinder and the concave must be adjusted to lessen excessive threshing ; if the straw is complete and unbroken, the quantity of wind shall be increased to make the chaff on the sieve surface the state of floating or the opening of the chaffer shall be slightly increased to make the grain fall through the sieve
檢查單個稻草的狀況：如果稻草嚴重受損，必須調節滾筒和凹面以減小脫粒過猛；如果稻草完好無損，則必須增大風量使得谷篩表面的廢渣飄浮起來，或者慢慢加大谷篩孔，使得穀物穿過谷篩。 -
Alternative characterization of concave and convex functions which is sometimes useful.
對于凹函數和凸函數還有一個替補的表徵，有時它是有用的。 -
Located along the northern silk route between central asia and metropolitan china proper, and serving as a meeting ground of " western regions " ( xiyu ) and indigenous cultural influences, dunhuang provides a continuous record of datable monuments, from the fifth century onward, showing the importation of the indian chiaroscuro style, known in chinese as aotu hua, " concave - and - convex painting, " and its eventual transformation into the indigenous chinese pictorial idiom
摘要作為絲綢之路上一個西域和本土文化的匯合地點，敦煌藝術提供了5世紀以來西域「明暗法」風格即文獻上所謂「凹凸畫」以及這種畫法最後變成中國本土繪畫筆墨風格的一個可確定時代的連續記錄。 -
The cloven hooves are sharp edged, elastic and concave.
蹄鋒利，呈凹形，富有彈性。 -
This article takes the lagrange equation as the principle, establishes mathematics modeling to the inertia brake vibration when it brakes, then simulates it with matlab. this paper educed the relation equations between, which are the inertia brake ' s friction coefficient of the brake ring and the friction disk, the mean radius, the braking force, rotation inertia of the driving top and the spline shaft, spiral climbing angle of the brake ' s concave - convex helicoid, the mean effort radius of the concave - convex helicoid, elasticity coefficient of the spring, quality of the driving top and the spline shaft, rotations inertia of the brake ' s rotation part besides the driving top and the spline shaft, suppresses sleeve. provides the theory basis for the inertia brake structure optimization
本文以拉格朗日方程為理論基礎，對慣性制動器在制動時的振動進行數學建模，然後用matlab對其進行模擬，得出了慣性制動器在制動時振動角頻率分別與制動環和摩擦片之間的摩擦系數、制動力的平均半徑、主動頂和花鍵軸的轉動慣量、慣性制動器的凹凸螺旋面的螺旋升角、凹凸螺旋面平均作用力的半徑、彈簧的彈性系數、主動頂和花鍵軸的質量、慣性制動器除主動頂和花鍵軸外其他部分的轉動慣量和、頂壓套的質量等慣性制動器各零部件的物理參數之間的關系，為慣性制動器的結構優化提供了理論依據。 -
Underpart lamp stand for cover disc shape, sole concave yield, flat facial ornament runs flowers 5 times, carve and collude and connect with the cloud line in the base
下部燈座為覆圓盤形，足底凹進，座面飾五辦花，底邊刻勾連雲紋。 -
Concave disk colter
凹面圓犁刀 -
The palm of one 's hand is slightly concave.
人的手掌是微凹的。 -
The graph of a concave function is always below its tangent.
一個凹函數的圖象總在它的切線的下方。 -
The mirror is concave.
鏡子呈凹面。 -
The next wave would lift those objects up its steep concave slope.
跟著涌來的浪頭又把這些物品舉到了那高高的浪峰上。 -
The next wave would lift those objects up to its steep concave slope.
跟著涌來的浪頭又把這些物品舉到了那高高的浪峰上。 -
In adults its contour may be straight, slightly concave or slightly convex.
成人肺其形狀可以是直的，輕微凹下或輕度突出。 -
The spectrograph uses a concave diffraction grating that provides a wavelength dispersion of 4. 2a°/mm in the first order.
光譜儀用了一塊凹面衍射光柵，第一級光譜的色散度為42埃毫米。 -
Semi - circular profile milling cutters, concave ; dimensions
半圓成形凹銑刀.尺寸
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