平湖ABA吹膜机组 平湖二层吹膜机组 平湖三层共挤吹膜机组 平湖五层共挤吹膜机组 平湖FFS重包装吹膜机 平湖充气膜生产线吹膜机 平湖吹膜机辅助设备 联系我们 大连龙尧塑料机械有限公司 联系人:徐经理 手机:13354065688 电话:0411-86268088 0411-86268988 维修号:0411-86265066 Email :xu86268088@126.com 地址...
灌木,近直立或多少攀援,高0.51米。茎和枝条平滑,无刺。叶薄纸质,卵状椭圆形、卵形或椭圆形,长25厘米,宽12.5厘米,先端急尖并具尖凸,基部圆形或宽楔形,干后常稍带黑褐色,下面苍白色;叶柄长37毫米,纤细,约占全长的1/2 1/3具狭鞘,或鞘不明显,脱落点位于近顶端,卷须有或无。伞形花序单个或成对腋生,通常...
Objective To understand the cognitive status of Pinghu residents on knowledge related to PM_(2.5),and to provide basis for the government to formulate relevant policy. Methods A unified questionnaire was used to investigate the knowledge on PM_(2.5)in residents aged between 17 and 65 and living...