Cost effective Quality Assurance programs for down and feather products are a challenge because the material is a natural product and very non-homogeneous.

花费有效的成本，以获得羽绒羽毛产品的品质保证程序，是一项有挑战的工作，因为这种原料是天然产品而且非常不均一。

youdao

Manufactured articles filled with feather and down - Requirements for clothing - Light use.

填充有羽毛和绒毛的制品。服装的要求。轻便服装。

youdao

The feather and down proofness is the most important quality request. It can be roughly calculated from the construction data of the fabric.

羽毛/羽绒不穿透性是最重要的质量要求。这可以从面料的结构数据中粗略的计算出来。

youdao

Pilot studies had shown that what might seem an obvious fourth procedure, to tone down, rather than enhance feather colour, was too damaging to work.

ECONOMIST: Male birds cannot afford to relax their standards

It's quiet and comfortable, and brings to mind lonely walks down cobbled streets, or a large feather bed on a rainy afternoon, or maybe a long-distance phone commercial.

NPR: Julie Doiron: Heartache's Frayed Edges

Creator Trevor Undi slowed it all down so that we can absorb the stitches, hems, and movement of Chanel tweed, silk and feather.

FORBES: Up Close: The Autumnal Elegance of Chanel Couture