低于7 meaning in Chinese

c/n

But few government policies suggest that the national average education of less than seven years ' schooling , a prime cause of poverty , will rise soon
但少量政府政策暗示国家平均教育水平低于7年学龄的话，由犯罪引发的贫困将迅速增加。
This tester is suitable to measure accuracies of pitch deviation with inside and outside straight helical circular gear among seventh degree . easy to operate and maintenance
适用于检查7级或低于7级精度的内外齿合直齿与斜齿圆柱齿轮的周节偏差。操作简便，易于维修，可供各工厂计量室及车间使用。
The method is simple : put 8 12 pieces of floorboards together on flat ground . check combination for flatness and smoothness as well as the right tongue - groove osculation that should be neither too loose nor too tight by way of hand feeling and visual observation to judge the processing precision
举例而言，广州的年平衡含水率为17 . 3 ，那么在广州市场销售的木地板的含水率就应该在717 . 3之间，含水率高于17 . 3或低于7的木地板都是不合格产品。