Most of today's commercially deployed systems include pressure, temperature and mass flowrate.
2
对所有的回热式低温制冷机，压力波与质量流之间的相位控制是达到制冷效果的关键。
To all the regenerative refrigerators, to control the phase angle between the pressure and the volumetric velocity is pivotal to attaining satisfactory refrigeration effect.
3
结果表明：沸腾换热系数随着热流密度和质量流率的增加而增加，随着狭缝尺寸的增加而减小。
It was shown that heat transfer coefficient increases with increasing heat flux, mass flux and decreasing gap of the annular channel.
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