?????：?? ?????? ?????? ?? ?? ???? ????? ?????? ?? ????? ????? ??????? ??????? ?? ??? ?????? . ?? ??? ???????? ????? ?????? ?? ?????? ?? ???? ???? ????? ?????? ??????? ?????? ??????? ?????? ??? ?????? ??? ? ?????? ???????? ????? ?? ??????? ???? ??????? ?????? ???? ?????? ???????? ????????? ?????? ????? ??????? ?????? ?????? ?????? ?? ???? ?? ????? ????? ?????? ?????? ???? ????? ???????? ??? ????? ????? ????? . ????? ?????? ?????? ?????? ?? ?????? ???? ??????? ??? 20 ??? ????? ?40 ???? ?? ???? ???? ????? ?????? ??? 50.
????????：?????? ?????????????????????? ??????? ??????? ???????? ????????
???????：???? ???? ?? ??????????? ????????????? ???? ?????????? ??? ??????? ????????? ?????? ?????? ????????
?????????：?????? ????? ??? ?????? ????? ??????????????? ???? ?????? ??????? ???1.67 ?? ?? ?? ??? ???? ??? ????? ??????? ???????? ?????????? ????????.
??????? ???????????：
| ??? ?????? (?????) |
?????（???） ?????? ???????(???? ???) |
?????? (????? ?? ???????) |
?????? ????????? (?? ?? ??????) |
||
| 400 | ≤12 1.5 |
12-20 2.2-4 |
20-25 4-7.5 |
1.3-1.6 | 40-80 |
| 500 | ≤12 3 |
12-20 4-5.5 |
20-30 5.5-7.5 |
1.3-1.6 | 40-80 |
| 650 | ≤12 4 |
12-20 4-5.5 |
20-30 7.5-11 |
1.3-1.6 | 130-320 |
| 800 | ≤6 4 |
6-15 5.5 |
15-30 7.5-15 |
1.3-1.6 | 280-540 |
| 1000 | ≤10 5.5 |
10-20 7.5-11 |
20-40 11-22 |
1.3-2.0 | 430-850 |
| 1200 | ≤10 7.5 |
10-20 11 |
20-40 15-30 |
1.3-2.0 | 655-1280 |
