细胞产生的成纤维细胞产生胶原纤维并形成团来组成瘢痕组织。

Cells called fibroblasts produce collagen fibres, which form bundles that make up the bulk of scar tissue.

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该推进器具有对长纤维不成团、不窝浆而且推进量大等特点。

The propulsion of the filament with no college, do not nest and to promote a large quantity of plasma and so on.

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