切丛是微分几何中最重要的概念之一，与之对偶的概念是余切丛。很多重要的几何性质都和切丛及余切从有关。它是研究微分几何的重要工具。
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本文提出了一种基于切丛的维数约简方法。
In this paper, we propose a dimension reduction method based on the tangent bundle.
现在太阳爬上了上坡，发出那种不寻常的灼烧过的赭色，每棵树和每丛灌木都被昨夜的雨洗刷得晶晶亮，一切都喷涌着快乐。
Now the sun was on the hills with that extraordinary colour of burnt-sienna, and every tree and every bush was sparkling washed clean by last night's rain, and everything was bursting with joy.
梁章钜将“雅”的以上三重含义兼收并蓄，并将之与“切”相结合，形成了其内涵丰富的“雅切”范畴，灵活运用在《丛话》系列的对联批评中。
Combining of the three meanings in Ya above and integrating with Qie, Liang presented his Ya-Qie which includes rich thinking and applied it to couplets comments in CongHua serials vividly.
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