PPއ۞Vо
l(f)r(sh)g2020-10-13 g[
PPۇVоĽY(ji)(gu)wS֣(ni)wS(x)ɣ(ni)Ӿoܵĝu׃uoY(ji)(gu)(d)صݶ^VγwVЧи߿϶߽{͉c(din)PPۇVоɲϾ۱ϩ(PP)(x)wSӟpY(ji)ɣʹκλW(xu)ճτ^V1m-60mЧȥˮСҸСwȲȫ۱ϩY(ji)(gu)W(xu)mڏ(qing)ᡢ(qing)AЙC(j)܄^VM(jn)ĻW(xu)wSۼg(sh)܉M͑(du)ԓa(chn)ƷĸN
(yu)c(din)
ʳƷ(j)۱ϩ֬ۇ
õAͪ܄
϶ֲ^VЧߣe
(ni)C̎PPėUY(ji)(gu)wS
ۇˇnjۺDǿ칤ˇһNԴ20o(j)50USA܊(sh)(yn)Ҟռԇ(yn)a(chn)ķ_ʼƾг(x)^VЧ^V1954l(f)оɹ҇ۇg(sh)Դ50ĩ60оO(sh)gЪʽ 60 ĩ 70 ЇgЪʽۇO(sh)_(ti)(sh)_(d) 200 _(ti)s 92-94 gUSAM(jn)Bm(x)ʽa(chn)Ӌ(j)ȫ* 300 _(ti)ϵgЪʽۇO(sh)\(yn)D(zhun)
(yng)I(lng)
ӹI(y)ˮˮA(y)^V
ʯͼW(xu)I(y)NЙC(j)܄AҺ^Vעˮ^V
t(y)ˎI(y)NᘄˎҺᘄϴƿˮA(y)^VݔҺԼNءˎע䄩A(y)^V
ʳƷИI(y)ϡˮ^V
Փvǟ(ߜڣ͜ع̻)ۺƬԭϾۇVоˇ۱ϩۇˇ(yng)^һNƬԭ֮⣬ۇˇõľۺƬԭоϩķϩ۱ϩPBTEMAEVAϩNۺԭ(۱ϩ)ľۺ϶^˼ӟضȸc(din)100ϷۇӟضԸc(din)ͿۇϩNԭһ㲻Ҫ
PPۇVоĽY(ji)(gu)c(din)wS(x)ȱ^СͨС10ף(sh)wS(x)1~4֮g