Ladder safety is always top of mind to those working in the occupational safety and health industry. With 29 CFR 1926.1053 (Ladders, construction) still appearing on the list of Top 10 Most Frequently ...
Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果