本文件描述了微波介质陶瓷介电性能测试方法(开腔法与闭腔法)的测试原理、测试条件、仪器设备、测试样品、测试步骤、测试报告、计算过程及测量不确定度。
本文件适用于均匀的圆柱形微波介质陶瓷。开腔法中,测试频率范围为2 GHz~24 GHz,相对介电常数的测试范围为3~300,损耗角正切值的测试范围为10-4~6×10-3,谐振频率温度系数的测试范围为-1 500×10-6/℃~1 500×10-6/℃。闭腔法中,测试频率范围为1 GHz~32 GHz,相对介电常数的测试范围为3~300、损耗角正切值的测试范围为2×10-5~10-2。本文件也适用于其他低损耗、无磁性固体电介质微波介电性能的测试。
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This standard specifies the terms and definitions,safety protection measures,test conditions,test equipments and tools,test methods,evaluation of test results and test reports for escape test method for emergency windows of high speed multiple unit.
This standard is applicable to the escape test of emergency window glass for high-speed multiple units with a design speed of not less than 200 km/h.
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This standard specifies the terms and definitions,test apparatus,test requirements,test procedures,and test report of the test method for glass hardness and scratch resistance of high speed multiple unit.
This standard is applicable to the test of glass hardness and scratch resistance of high-speed multiple units with design speed not less than 200 km/h.The other types of glass hardness and scratch resistance may refer to this standard.
定价: 348元 / 折扣价: 296 元 加购物车

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400-168-0010




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