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??????GA/Tl46-1996

(1996725? 199711??)

1
??????
????????
???????????
2
2.1 ???????????????????????
2.2 ???????????o
2.3 ????????????????????????
2.4 ??????????
2.5 ???????
2.6 ???????()??????
3?
3.1 ??5cm2????????
3.2 ??
3.3 ?????
3.4 ????
3.5 ?????
3.6 ?2cm2??4cm?
3.7 ??
3.8...

????
3?
3.1 ??5cm2????????
3.2 ??
3.3 ?????
3.4 ????
3.5 ?????
3.6 ?2cm2??4cm?
3.7 ??
3.8 ????
3.9 ???
3.10 ?26dB?????
3.11 lcm??
3.12 ?????
3.13 ????
3.14 ??
3.15 ??
3.16 ??2???1??
3.17 ????
3.18 ??lcm?
3.19 ??5cm?4cm2?2cm2?
???????
???

  ? ????, ??????????,????
 
????????????
???3 ?
3.1 ??5cm2????????
3.2 ??
3.3 ?????
3.4 ????
3.5 ?????
3.6 ?2cm2??4cm?
3.7 ??
3.8 ????
3.9 ?
3.10 ?26dB?????
3.11 1cm??
3.12 ?????
3.13 ????
3.14 ??
3.15 ??
3.16 ??2???1??
3.17 ????
3.18 ??1cm?
3.19 ??5cm?4cm2?2cm2?
4 ??
4.1 ??15cm2?20cm2???...

???
? 2008-6-8 10:03:29
?
?
?

(?????? CA/T146-1996-07-25)

??
1??5?????????
2??
3?????
4????
5????
6?2???4??
7?
8????
9?
10?26dB?????
111??
12?????
13????
14??
15??
16??2???1??
17????
18??1?
19??5?4??2??
??
1??15??20?????
2?????1????1.5???
3????????
4???
...

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? ? ???????20?(?10?)???10?(?5?)
?????? 8, ? 6? ????6,?4?
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? (?)?????()???()???()???,?????(),?0.7(??0.2),?0...