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Working clearance is an important quality index of spherical roller thrust bearings

Working clearance is an important quality index of spherical roller thrust bearings…

Instagram post previews are working again on Twitter and will this have a positive impact on lcd display screen promotion

Nearlya decade later, Instagram post previews areworking again on Twitter OnWednesday, Instagram made an announcement nine years in the making. Since 2012,photos shared on Instagram to Twitter can only appear as a link in plain text.From now on, Inst…

The working principle of superplasticizer admixture for concrete

The working principle of superplasticizer admixture for concrete (1) Dispersion: After the cement is mixed with water, due to the hydration of the cement particles, the cement particles form an electric double-layer structure, which makes it form a s…