Curve C at the spot P(x0, y0) curvature is the maximal circle of the curve C tangency at the spot P(x0, y0). Contrail curve G of the center D of curvature circle entitles evolute of curve C.

曲線C在點(diǎn)Px0日韩精品久久久久，y0）曲率圓是與該曲線C相切于點(diǎn)P(x0黄色网站视频一区，y0的最大圓，曲率圓的圓心D的軌跡曲線G稱為曲線C的漸屈線久久久久精品无码观看不卡。

Four circles of radius 1 are each tangent to two sides of a square and externally tangent to a circle of radius 2, as shown. What is the area of the square?

A 32 22+12 2 16+16 3 48 36+16 2 中文：如圖所示国产精品一级A级理论片在线观看，四個(gè)半徑是 1 的圓分別與正方形的兩邊相切且與一個(gè)半徑是 2 的圓外切，這個(gè)正方形的面積是多少久色黄色网站？

An optimal heat transfer criterion was proposed, which means that the optimal heat transfer appears when the region outside the impellent thin spray film inscribes in the square heated surface.Based on the H criterion aforementioned, two DANFOSS nozzles of the three with inclined spraying angles were used to experimentally study the temperature distribution in the heated surface.

應(yīng)用不同DANFOSS噴嘴對(duì)水平熱源進(jìn)行垂直噴射免费二级九九黄色，在變換噴嘴距熱源表面高度的前提下，研究最優(yōu)換熱性能出現(xiàn)在何種情況日韩欧美中文精品第一页，得出H準(zhǔn)則：當(dāng)噴霧形成的液膜的圓形外推區(qū)域正好與熱源邊緣相切時(shí)熟女啪啪视频，系統(tǒng)換熱性能達(dá)到最佳。

Central part of the water on the inner surface just tangent with the impeller wheel, water ring coincides with the lower part of the inner surface contacts the top leaves (the leaves in the water in fact has a certain ring insertion depth).

水環(huán)的上部分內(nèi)表面恰好與葉輪輪轂相切www.18岁禁止网页，水環(huán)的下部?jī)?nèi)表面剛好與葉片頂端接觸（實(shí)際上葉片在水環(huán)內(nèi)有一定的插入深度）亚洲视频小说之无码视频。

The next part of the water ring coincided with the inner surface of the impeller wheel Tangent, water ring coincides with the inner surface of the upper leaves of the top contact (in fact the leaves in the water ring must have the insertion depth).

水環(huán)的下部分內(nèi)表面恰好與葉輪輪轂相切，水環(huán)的上部?jī)?nèi)表面剛好與葉片頂端接觸（實(shí)際上葉片在水環(huán)內(nèi)有一定的插入深度）aaa视频色。

Water rings on the part of the inner surface just tangent with the impeller wheel, water ring coincides with the lower part of the inner surface contacts the top le**es (the le**es in the water in fact h**e a certain ring insertion depth).

水環(huán)的上部分內(nèi)表面恰好與葉輪輪轂相切97热在线视频免费播放器，水環(huán)的下部?jī)?nèi)表面剛好與葉片頂端接觸（實(shí)際上葉片在水環(huán)內(nèi)有一定的插入深度）亚洲综合18。

The access is tangent to the curve and the spaces refer to the interior

入口處與建筑的曲線和內(nèi)部空間相切』粕玜片视频中文字幕在线观看一级？蛷d的"公共空間"是透明的

One component has the direction tangent to the path of this point, pointed in the same sense of angular acceleration of this body, and is called the tangential acceleration.

一個(gè)分量方向與該點(diǎn)的軌跡相切日韩免费小视频，指向與該物體的角加速度的方向相同，叫做切向加速度最新91地址永久入口。

Meanwhile some detailed numerical researches are done on the influence to the aerodynamic field throughout changing magnitude of the primary air and the secondary air, adopting homocentric two tangential circles, tangentially-fired in number one and number three corner face-fired in number two and number four corner, changing the air distribution of the secondary air and the reverse swirl of upper secondary air, Which provide the theoretical basis for boiler design, optimal operation, renovation etc.

本文同時(shí)應(yīng)用數(shù)值研究方法模擬了四角切圓鍋爐一二次風(fēng)大小變化做国产在线播放、大小同心切圓布置方式、一三角相切二四角對(duì)沖九九视频精品在这这里、二次風(fēng)配風(fēng)方式改變女人被添全过程A片、二次風(fēng)反切等對(duì)爐內(nèi)流場(chǎng)特性的影響，為優(yōu)化鍋爐設(shè)計(jì)久久这里有精品、改造538在线无毒播放、運(yùn)行提供了及其有意義的理論上的指導(dǎo)。

The paper discusses the position relationship between the litter circles of torus and the section circle of sphere figured out the intersection of torus and sphere when the central axis of torus and sphere center in XOZ coordinate plane through coordinate transformation.

利用坐標(biāo)變換使圓環(huán)中心軸與球心同在XOZ平面內(nèi)99riav.1，討論了在該平面內(nèi)圓環(huán)截圓與球圓的位置不相交亚洲欧美日韩精品一区二区三区熟女乱、相切和相交時(shí)圓環(huán)面和球面的相交情況，并給出了判別圓環(huán)面亚州第一在线a、球面相交情況的流程圖以及圓環(huán)面和球面相交實(shí)例国产免费A片区。