
1. Raw material testing stage Before sugar cane, beet and other sugar raw materials enter the produc…
View moreQuality control during production 1. Monitoring soluble solids During the jam-making process, sugars…
View moreBasic properties of tuning forks A tuning fork is a “U”-shaped metal device that vibrate…
View more1. Basic principle of light refraction When light enters from one medium into another, the propagati…
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