value chain upgrading 价值链升级
industrial chain upgrading 产业链升级
Upgrading Value Chain 价值链提升
chain upgrading
链升级
以上为机器翻译结果，长、整句建议使用 人工翻译 。
She recommends upgrading from the exposed-light-bulb-and-chain look and installing a simple orb fixture.
WSJ: Inside Jobs: Wallpapering Your Closet
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