a kilometre and a half of bitumen一公里半的柏油路面contain bitumen含沥青The irradiation stability of bitumen and bituminized producthas been investigated.本文研究了沥青及沥青固化产品的辐照稳定性.The article introduced the category of natural bitumen an...
Other factors that may affect dam selection are roadways, fishway, locks, and log passages.其他影响选坝的因素有道路, 鱼道, 船闸和筏道等.Choice of fishway intake is the key of success or failure.鱼道进出口的选择:这是鱼道设计成败的关键....
A proportion of the paddocks can be withdrawn for mowing.可以抽出一定比例的地块供收割牧草用.He reduced the acreage of his property by selling off several paddocks.他卖掉了一些围场以缩小地产的面积.Their fields are mere paddocks.他们的田地都只是一些牧场....