本实用新型公开了一种带通风侧壁的衣柜,包括柜体,所述柜体的外表面一侧固定安装有通风外壳,且通风外壳的内部与柜体的内部相连通,所述通风外壳的内部一侧开设有安装腔,所述安装腔的内部安装有驱动机构,所述通风外壳的外表面靠近柜体的一侧开设有风口.本实用新型中,通过设置的开闭机构,传动机构,驱动机构,加热组件和风...
We obtained movement detection thresholds for two-dimensional random speck-patterns ("Julesz" patterns) homogeneously moving over the whole target field (5.21×5.31 degrees of visual angle). We alternated between two uncorrelated but otherwise similar patterns, one moving with velocity →v1, the othe...
摘要: 试样经稀释后,采用电感耦和等离子体发射光谱法(ICP-AES)直接测定盐酸中的微量硅含量,结果表明,选择波长288.158 nm作为分析线,检测限为质量浓度0.02 mg/L,回收率99.9%～103.3%,相对标准偏差2.8%,在质量浓度0.05～5 mg/L内线性关系良好.该方法简便快捷,精密度较好,相对标准偏差2.8%,准确度较高,能满足盐酸中...
The crop yield gap between organic an conventional agriculture A key issue in the debate on the contribution of organic agriculture to the future of world agriculture is whether organic agriculture can produce sufficie... TD Ponti,B Rijk,MKV Ittersum - 《Agricultural Systems》 被引量: 466发表:...