                                                                                                             59800     2000                  297451       12151       22640    1998        9   3                                                                                                    1683                1951   10   1                                              48.8%                                                           -2～-3℃        500      100                                     2000         132688   2000       9.61         3.72                49037                                                                             2000        6750                                —                         