超碰8I亚洲精品色播I欧美日韩精品不卡一区二区三区Iav免费片I国产69精品久久99的直播节目I国产精品高清一区二区I爆乳熟妇一区二区三区I日韩av网址在线观看I五月视频I国产超碰人人模人人爽人人添I寡妇高潮一级视频免费看I草女人视频I国模视频一区I欧美亚洲日本一区I国产精品夜夜爽I亚洲av首页在线I日韩一区免费I在线免费观看亚洲视频I中国妇女做爰视频I男女拍拍拍网站I毛片视频免费观看I日本a v网站I干在线视频I西欧free性满足hd老熟妇I欧美午夜视频I日韩成人在线播放

 In the process of using the atomic ash, we need to pay attention to many things, to avoid the local overheating of the atomic ash coating. Because the construction environment temperature is too low or the customer's requirements are urgent, many construction personnel use ultraviolet lamp auxiliary heating and other methods to improve the drying speed of atomic ash, so as to shorten the construction period. It is not too bad to do so, but we must pay attention to the local overheating phenomenon. Because the insoluble and immiscible material after the hardening of atomic ash is a bad conductor of heat, the local high temperature will change the expansion coefficient and internal structure of the coating, resulting in foaming and other adverse consequences. It has been proved that the baking temperature should not exceed 80 ℃.