levelling net meaning in English

水准网

A optimal design of the second grade level net in fuo shan
佛山市二等水准网的优化设计
The paper introduces the optimal design of the second grade level net in fuoshan , expounds the evaluating method on accuracy for different net pattern based on the principle of indirect balancing and the computing function of the excel matrix , and selects a pattern which meets the needs of national norm for net form , the density of point , accuracy and reliability
摘要本文介绍了佛山市二等水准网项目的优化设计，重点阐述了根据间接平差原理对不同的布网方案，利用excel的矩阵计算功能实现精度评估的方法，评选出一套从网形、点位密度、精度、可靠性等方面都符合国家规范和佛山特点的方案，以供参考。
Where such enterprises as with capital for actual foreign investment more than 3 million us dollars and less than 5 million us dollars , and complete commission within 18 months since the date of industrial and commercial registration , the enterprises in question shall be granted as a support the 30 % of the city level net benefits of the amount of selling the land
第三条：外资实际投入资金300万美元以上不足500万美元的企业，且自工商登记之日起18个月内完成投产的，给予土地出让金中市级纯收益部分30 %资金扶持。