Kèo nhà cáiŮʿͣĻ˴ί̵4һ˽400ǻλ
ͳ㶫ͽվ״ͻ2Ԫǰλڵλķֱɽ㽭ͺкϵ״ͻһԪƵĻ˵Ϊǹ͵ˮŷ**ƵһСǹܡֵijͣ·4ųǹƷĹԱֳһŮվڹ·һڳһվڳԵĹ·һŲժˮСɽϳijǹǵŶƵ˵ʱڹԱֻĵ
Դ1979й7ڷ֯ƷʵóĦĻ40δĴóйɳݵ̸дҵ˫óݵĴҲʷǰϻȻֹɿ˽һɭǹɱ֮ǰ۴С߳ս븯ܷӲι߽ʷ̰ḱϯ
ҵҪһǶԷҪǸһҪһҽҩͨѺ;ʧѵ˵ھ岹ٻû5ѮΪвͺϲʱοܳȾ3~4ƫͽˮӰʪΪвͺϾֵȾ5~7غʡܽǿƫӰɢܽӰʪͺϾֵȾ8~10СģˮӰɢʪΪ11~16ɢһΪвϴ㶫ȾڼҪȾҪΪPM2.5PM10