- 1、Inallcasesthegnomonliesintheplaneofthemeridian.2、indicatesthedaylighthoursbytheshadowthatthegnomoncastsonacalibrateddial.3、ThroughtheshadowofthegnomonwecanreadthelocaltruesolartimeinXieheMiddleSchool.4、Astakeusedforthispurposewastheearliesttype...
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