The stone steps, dating back to 1855, are beginning to wear.那些可以追溯到1855年的石阶开始出现磨损。They've been dating for three months.他们已约会3个月了。The most frequently used method is radiocarbon dating.最常用的方法是放射性碳定年法。...
...Britain's imperial possessions.大英帝国的属地...the Imperial Palace in Tokyo...东京的皇宫The imperial gallon is not the same size as the US one.英制的加仑与美制的容量不同.Old Beijing is in exuviate carapace, although the wall Imperial Pa...
Advantage: good adhesion and maintenance , keep warm , heat insolation, stable and endurable.具有接着力、保持力强、减震性佳及固定 、 保温、隔热作用等优点.The insolation here is abundant , and the forest - free days are about 209 days every year.年平均降...
The gemological refractometer is characterized by small volume and less weight.这种宝石折射仪的特点是小巧轻便.It dark green, light yellow - green spots, other gemological properties similar to omphacitic jade.它呈深绿色, 有淡黄绿色斑点, 其他宝石学特徵与绿辉...