求翻译：目前常用的熔盐是一种三元无机盐类[8]：由53%KNO3、40%NaNO2和7%NaNO3熔化后形成的熔体混合物，属于危险类物品。熔盐与导热油相比，在相近的压力下可获得更高的使用温度(350~600℃)，且有较好的热稳定性，其导热系数是其他有机热载体的两倍，而且温度在600℃以下时，几乎不产生蒸汽，这是熔盐得性能优于导热油得所在。它的主要物理特性数据如下：是什么意思？

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The current common salt is a $3 inorganic salts [ 8]: 3 by 53 per cent, 40 per cent KNO NaNO 2 and 7 % NaNO 3 melting of the molten mixture, these items are dangerous. molten salts, when compared with thermal oil under pressure in the can be similar to a higher temperature range (350 to 600 degrees,

At present the commonly used fused salt is one kind of three Yuan inorganic salts (8): After 53%KNO3, 40%NaNO2 and 7%NaNO3 melt the melt mixture which forms, belongs to the danger class goods.The fused salt and the heat conduction oil phase compared to, may obtain the higher application temperature

Currently used is a molten salt ternary inorganic salts [8]: from 53%KNO3, 40%NaNO2 and 7%NaNO3 after melting to form molten mixture, is at risk items. Thermal conductivity of molten salts and oils than at similar pressures for higher temperature (350~600℃) and has better thermal stability, its ther

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