Case: Custom 30 meter stainless steel, with hardened mineral crystal, and stainless steel caseback.
运动：日本石英，30米防水，不锈钢，硬矿物晶体和不锈钢底盖带：弹簧钢。
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This article discusses in detail quick adjustment methods and accurate reading of dividing light meter with whole experiment operator process and experiment data treatment case.