侧缘，即缘侧，是一种空间，“缘侧”空间作为室内外空间结合的区域，倘若我们赋予空间色彩的属性，那么它就可以被认为是一种具有灰色属性的空间。
I:brain stem of lateral margin part depression, aqueduct and fourthventricle situation middle or slightly displace opposite side. aqueductdisplace angle less than 5 degree (graph2).
Ⅰ级:脑干受压侧缘局部凹陷,导水管、第四脑室位置居中线或略向对侧移位,导水管移位角度小于5 度。
参考来源 - 145例听神经瘤脑干压迫分级与显微外科治疗·2,447,543篇论文数据，部分数据来源于NoteExpress
推覆体侧缘发育了与边界断层平行的侧断坡、斜断坡次级断层相关褶皱背斜；
On the lateral border of the nappe, lateral and oblique fault-slope secondary fault-related folded anticlines parallel to boundary faults were developed.
有侧滑时，尖侧缘的非圆截面机身头部在中等和大迎角下，可具有方向稳定性。
The fore-body with sharp section angle can produce direction stability at middle-higher angle of attack in the case of side-slip.
合欢种皮侧缘厚壁(薄壁)细胞层中有维管束，它为种皮的发育提供水分与营养。
The vascular bundles in stereid layer or Parechymatous cell layer of lateral margin of its testa provide the testa development with water and nutrition.
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