Terms for subject Hydroelectric power stations containing first

English	Chinese
complete at the first attempt	一次性完成
duration of first unit putting into operation	首台机组发电工期
fiducial value before first impound	蓄水基准值
first-class load	一类负荷
first class protection	一类防雷区
first critical speed	第一临界转速
first demand guarantee	无条件保函，见索即付保函
first demand guarantee	无条件保函
first demand guarantee	见索即付保函
first ice	初冰
first impound period	首次蓄水期
first moment of area of section	截面面积矩
first order leveling.	一等水准
first order leveling	等水准
first order leveling	一等水准
first order levelling	一等水准
first-order second-moment method	―次二阶矩法
first-order second-moment method	一次二阶矩法
first order station	一等测站
first order station	一等站
first order traverse	一等导线
first order triangulation	一等三角测量
first order primary triangulation survey	一等三角测量
first order weather station	一级气象站
first-pole-to-clear factor of circuit-breaker	断路器首开极因数
first principal stress	第一主应力
first-stage cofferdam	第一期围堰
first-stage facing	一期面板
Kirchhoff's first law	基尔霍夫第一定律
pass at the first attempt	一次性通过