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1 [天 摄]?底片常数 中文名称 底片常数 英文名称 plate constant 定义 照相天体测量工作中,用于转换底片上天体坐标的一组与底片有关的常数。 应用学科 天文学(一级学科),天体测量学(二...-? 本文在运用底片常数法解算三角视
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Cold plate: with constant temperature water tank cooling below room temperature. - 2
A parallel plate condenser with installation of drying air, lighting and charging is provided, which can keep charge numbers constant in demonstration experiment. 介绍一种具有干燥、照明和充电系统的演示实验装置，该装置使平行板电容器在演示时能保持所带电荷基本不变。 - 3
When the discharge pressure keeps constant, the relationship between displacement of valve rod and suction pressure, wobble plate case pressure, flow rate through control valve have been obtained. 研究结果得出了当排气压力恒定时，阀杆位移同吸气压力、摇板箱压力以及控制阀流量的稳态特性关系。
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