In the highway construction of our country at present, the semi-rigid material is widely used for its high intensity, low cost, and being wide of the raw material source.
目前我国高等级公路建设中，半刚性材料以其强度高，造价低廉，原材料来源广等优点，被广泛用作路面基层。
The formula has aromatic flavor, wide raw material source, low price and better effect than the finished baits.
该配方香味浓郁，原料来源广，价格低廉，较成品饵料效果更好。
With its controllable solidifying velocity and vast raw material source, cement-water glass(CS)two-shot grouting has found wide applications in many geotechnical projects.
水泥-水玻璃（CS）双液注浆技术以其凝固速率可控性强、材料来源广，在岩土工程中得到广泛应用。
At last, this paper points out the problems at present such as raw material source, the improvement of process and equipment, the problem of research on new catalysts, et al.
最后指出了目前存在的问题，如原料来源、工艺和设备的改进、新型催化剂的研制等。
At last, this paper points out the problems at present such as raw material source, the improvement of process and equipment, the problem of research on new catalysts, et al.
最后指出了目前存在的问题，如原料来源、工艺和设备的改进、新型催化剂的研制等。
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