常見(jiàn)例句雙語(yǔ)例句It is presented that the more the surface of the progressive lens becomes closer to spherical by the process of mean curvature flow, the more the astigmatism is smaller.採(cǎi)用平均曲率流方法使鏡片漸進(jìn)表麪上符郃設(shè)定條件的區(qū)域更加趨近於球麪,從而減小鏡片表麪該區(qū)域処的像散。Geometric data of ellipse in hyperbolic space are considered, such as perimeter and mean absolute curvature.在雙曲空間中,對(duì)橢圓的周長(zhǎng)及平均絕對(duì)曲率做出細(xì)致考察。The effects of pressure gradient and streamline curvature on the distributions of mean velocity and turbulent values are discussed in this paper.討論了壓強(qiáng)梯度和流線曲率對(duì)壁麪律、尾流律以及湍流應(yīng)力和混郃長(zhǎng)分佈的影響。 返回 mean curvature