ľ֞ǎ? tľcʲô?
˾ľ rg2019.03.04 g[Δ(sh)1579
ȣľĶx
ľľмtSľľԠľľйɣoζζyeY(ji)(gu)ľľȻ|(zh)H_ןoȱݮa(chn)
Σľķ
ľ()StɷN
Gľɸ߶ֱľĽY(ji)(gu)yֱб潻eڸͼӹzϵܾܣ|(zh)^ܛ_ȺgееgееڽҾذzϰذ壬ȏV;
tľĽY(ji)(gu)y滨yͼӹ^yܣ|(zh)ӲȺg^ܺܺãgееڼҾӸߙnҾӣ҃(ni)ذȏV;һľƷͬrľľмʳþ(U)B(yng)
ڸ^N_ѬF(xin)ľ|(zh)ƫӲ,wSLԴ׃
ٴtľc
t(t)^(gu)죺ɢײܿ@ٶԴιܿףٔ(sh)̏ܿ(2-3);б;wSSڽMŴR¿Ҋh(hun)ľ侀ŴR@ϡխԌSz@ɫL̲һ
ľGľ_60m؏s2.0m߰s70N(j)ɫ֞t͜\t
ֲֲږ|ρ^(q)ҪӡἰRM
M棺߅ą^(q)e@IJļtutɫ߅Sɫ3-4cmL݆@
Ƥ1.0-2.0cm|(zh)^ܛחlKxƤtɫСƬÓ䣬(ni)Ƥؼtɫ;gƤwSl(f)_xzız(ni)Ƥ
ԣ߹ɣyeY(ji)(gu)֣;ɿsСӹ⻬zἰܺã䣬Nܶ0.56-0.86g/cm3
;mІΰzϰҾߡtľذ҃(ni)bһ㽨촬
ReҪcız(ni)ƤIJļtutɫܿwSSz@ɫL̲һ
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