对低温保持器的外形结构、机械减震系统进行了详细的描述。
The configuration of flow cryostat and its mechanical damping system were described.
传统的恒温器不够好，但是19世纪发明的Dewar flask一次能保持像液态氮这样的温度在- 1960华氏摄氏度的低温液体好几个月之久。
A conventional thermos isn't good enough, but a Dewar flask, invented in the 19th century, holds cryogenic fluids like liquid nitrogen at temperatures of -196oc (-321of) for months at a time.
恒温器技术被认为是处在消极的技术层面的：它能保持低温的东西低温。
A thermos has the appropriate level of technology given the fact that it's passive: it keeps cold things cold.
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