The Manhole Data Collection Project. Repairing the leak as soon as possible . Many of the graves have no markings. Details on the Japanese covered bridge.
It is therefore called the“green tomb .”. The covers are round because the holes are round. More than 150 covers disappeared during one month in Chicago. The pavement uses the invisible manhole cover technology;Mozambique: Metal manhole covers replaced with cement covers. . While cast iron is very durable, this type of manhole cover has its flaws. 蛋白质停留在井盖 在全市Aysenhagen,德国北部。 Protein stuck in manhole cover in the city Aysenhagen, northern Germany. In the past, the only option for manhole covers was heavy and expensive cast iron. On Wednesday, firefighters warned passers-by to avoid stepping on metal manhole covers . 所有铸件,包括井盖 ,都是在称为铸造厂的大型工厂生产的。 All castings, including manhole covers , are made in large factories called foundries. In order to eliminate the security risks, the city developed a new type of manhole cover . Manholes are required so that people can clean, inspect, or repair the subsurface utilities. 向日葵海星很大,大约是井盖 的大小,并且具有巨大的食欲。 The sunflower sea star is large, about the size of a manhole cover , and possesses an enormous appetite. Every manhole cover , from the simplest to the most ornate, is first modeled in wood or aluminum. 在日本1780个自治市里,就有95%个城市采用了设计独特的井盖 。 Today nearly 95 percent of the 1,780 municipalities in Japan sport their own specially designed manhole covers . 井盖 是必需的,以便人们可以清洁,检查或修理地下公用设施。Manholes are required so that people can clean, inspect, or repair the subsurface utilities. Nor is it likely that alternative materials will be used to produce manhole covers as cast iron is extremely economical. 所有井盖 都是圆形的,因为圆形物体不能掉入相同直径的圆孔中。 All manhole covers are round because a round object cannot be dropped into a round hole of the same diameter. 这是因为F1赛车产生如此大的下压力,井盖 很容易被拉出车道。 This is because F1 cars produce so much downforce that manhole covers could easily be pulled right out of the carriageway. 井盖 保护着竖井免受核爆炸冲击波的破坏,并能承受住航空炸弹的直接命中。This cap protects the shaft from a nuclear explosion wave and can withstand a direct hit of an aerial bomb. 微积分BC井盖 同一主题的其他材料一起:如多变量微积分和无穷级数; Calculus BC covers the same material along with other topics such as infinite series and multivariable calculus; 在他被监禁的第三个晚上,他听到有人打开井盖 并将其挪开。 On the third night of his imprisonment, he heard someone unlocking the cover of the well and removing it. 接入方式,叫做井盖 挖到这些地下管道定期让维修工人到达。 Access ways, called manholes are dug down to these subsurface conduits at regular intervals to allow maintenance workers to reach them. 或者我们的球墨铸铁管、柔性接口排水管和井盖 已经出口到大约20个不同的国家和地区。 Or our ductile iron pipes, flexible interface drainpipes and manhole covers have been exported to about 40 different countries and regions.
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