label 标示语,标号labelled compound 标记化合物labelling (1)标记(2)示踪laboratory 实验室lacquer (1)漆(2)喷漆lacquer coating 漆涂层lad running 负载逸行ladder diagram 梯形图ladder filter 梯形滤波器laead wire 引线laer calorimeter 激光量热器laer interferometr manometer 激光千涉气压计laer isotope separati...