The builders will have to strengthen the existing joists with additional timber.施工人员将不得不另外用木料加固现有的托梁。Sections : Various shapes of cross - section for construction, such as beams, girders, joists, rails, angles, etc.型材--横...
White wines tend to gain depth of colour with age.白葡萄酒年头愈久，颜色愈深。I was able to gain invaluable experience over that year.在那一年里我有幸获得了非常宝贵的经验。Through superior production techniques they were able to gain the competitive edg...
为了回答这个问题, 我们尚须画出主应力迹线图.To answer this question, we need to plot trajectories of principal stresses.等震线图是仪器记录有价值的补充资料.The isoseismal maps are valuable complements to the instrumental records.分析市场的周线图,确定它们的趋势.Review the we...