节省原材料 meaning in English

economize raw materials

Material and fund can be saved and road longevity can be prolonged if this road structure is adopted
如采用本路面结构可节省原材料，节约资金，提前工期和延长路面寿命。
At the same time , there are not many problems for the good wave shape , for example , yawp , outputting du / dt , torque impulse and so on . technology of frequency conversion had developed into an absolute technology . moreover , it is important in many fields , such as reasonable using resource of water , decreasing pollution of environment , saving electric sources , improving work condition , saving materials , reducing costs and improving output
交流变频调速技术的发展由于其地位的重要性，巳迅速发展成为一门独立的技术、学科领域，它对合理利用水资源，减少环境污染，节约电能，改善工作条件，节省原材料，降低成本和提高产量等方面均起着十分重要的作用。