The presence of Falling Weight Deflectometer meets this need.落锤式弯沉仪的出现适应了这一需求.The falling weight deflectometer ( FWD ) is used to evaluate the effectiveness of the impact compactor.摘要将落锤式弯沉仪 ( FWD ) 成功地用于路基冲击压实效果的检验....
The crowds became violent and threw petrol bombs at the police.人群变得狂暴起来，并向警察投掷汽油弹。Riot police hurled tear gas canisters and smoke bombs into the crowd.防暴警察向人群中投掷了催泪瓦斯罐和烟幕弹。Everybody took cover when the bombs began to fal...