煤矿噪声和振动主要来源于井下机械化生产，其危害取决于生产过程、生产工艺和所使用的工具，如风动凿岩机和局部通风机的噪声和振动等。长期在噪声下工作，可能造成（ ）下降，甚至引起耳聋;长期接触振动，可能导致局部疼痛，甚至引起内脏器官损伤。
October 18, 2018 Furniture & Wood California design studio unveils new furniture collection made from natural fibers Bio-composite wood board, sourcing natural fibers, low VOCs, steam molding, and the importance of design Read more August 30, 2017 Printing & Packaging Is the science of food-...
Boutique hotelier Cassetta Group, whose properties include Malibu’s Surfrider, will open Hotel Lucile in L.A.’s Silver Lake district in early 2025. The 25-room hotel, which is being redeveloped out of an old church, will feature a rooftop lounge with views of Downtown as well as...
With a convenient location off I-44, just 35 minutes from the University of Oklahoma, our hotel in Chickasha is a great choice for all travelers. "Hotel was not convenient to highway, had to take many side streets to find it, for the age of the hotel it was not very clean, staff...
Explore the diverse geography and landmarks of the United States with WorldMap1's interactive map. From the iconic Golden Gate Bridge 🌉 to the majestic Empire State Building, navigate through the country's famous cities, national parks, and landmarks.
For millennia Indigenous communities have relied on the far north's caribou herds for sustenance. But as the herds dwindle, the future becomes difficult to predict.
California forums day 1 post Need recommendations on where to stay in California plz! May 16, 2024, 1:36 PM Save I'm staying in California for three days for a mini getaway. I would love to stay in an area that has lots to do close by and is by the beach....
As a parent of 3 young kids few maps have resonated as much as the map above showing where people are getting less than 7 hours sleep a night, the amount the Center for Disease Control (CDC) considers enough.
Welcome to La Quinta Inn & Suites by Wyndham Orlando IDrive Theme Parks, where fun is never far! Located off of I-4, we’re in the heart of the entertainment district and one of the best places to stay for guests...La Quinta Inn & Suites Orlando Convention Center Double rooms; King...
The video closes with Vice President Kamala Harris saying that “only in America” is it possible that “two middle-class kids,”“one the daughter of Oakland, California” and the other “a son of the Nebraska Plains,” can make it “all the way to the White House.” Elena Sc...