The Alcoholic Liquors (Amendment of Enactments Relating to Strength and to Units of Measurement) Order 1979
1979年酒类（修订关於烈度及量度单位的法例）令

Amendment 1 - Measurement of quartz crystal unit parameters by zero phase technique in a pi-network. Part 1: Basic method for the measurement of resonance frequency and resonance resistance of quartz crystal units by zero phase technique in a pi-network
修改件1-通过π网络中的零相位技术测量石英晶体单元参数 第1部分:用π网络中的零相位技术测量石英晶体单元谐振频率和谐振电阻的基本方法

1999-08-13