本文介绍一种操作简便、适用范围广的液体介质恒温槽.一次可以装入至少40个标准(10×10×55毫米)冲击样品,自动恒温误差小于±0.5K,温度场的温度分布均匀.在273—116K温区内可以任意选择恒温点,只要育充分的冷剂,自动恒温时间可以足够长. This paper presents a simple and easy-to-use liquid bath thermostatic bath with at least 40 standard (10 × 10 × 55 mm) impact samples with an automatic constant temperature error of less than ± 0.5 K and uniform temperature distribution. In the 273-116K temperature range can be any point of choice, as long as enough refrigerant, automatic thermostat time can be long enough.