| 摘要 |
<p>The invention provides a refrigerant comprising a mixture of three compounds selected from the group consisting of hydrofluorocarbons represented by the formula ClHmFn (1> wherein when l is 1, m is an integer of 1 or 2, n is an integer of 2 or 3 and m + n =4; when l is 2, m is an integer of 1 to 4, n is an integer of 2 to 5 and m + m = 6; and when l is 3, m is an integer of 1 to 3, n is an integer of 5 to 7 and m + n = 8.</p> |
