Danger and Restricted Area Workplace Signs Set ID: 292079195 收藏 加入清单 下载版权Stephen Marques 格式矢量图 编辑图片 以图搜图 矢量:可随意调整尺寸 大图:6667× 5000 像素·56.45 cm × 42.33 cm·300dpi·JPG 了解更多 图片套餐 常见问题: 商业用途| 授权| 授权书| 发票| 合同问题...
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Restricted area - no drop off - no parking any time road sign with 2 red stop signs in front of black lava blocking the road. Big Island Hawaii. ,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体
Therefore, the research area of this manuscript is concentrated on the construction safety fall situations in mega building construction projects. Specifically, this research aims at developing a passive, indoor safety warning system, based on Wi-Fi-generated channel state information (CSI), for falls...