搜索结果: 1-1 共查到“劳动科学 belting industry”相关记录1条 . 查询时间(0.074 秒)
Productivity in the rubber and plastics hose and belting industry
plastics hose rubber belting industry
2009/5/11
Although new technology and plant reorganization aided an average 1.3 percent increase in productivity, stagnant demand and rising import penetration kept the rise moderate over the 1972-87 period. T...