Chemical sweeteners are to be avoided at all cost!
要避免不惜一切代价地使用化学甜味剂！
So, it has great significance to research a chemical diverting agent of high cost performance.
为此, 研制高性价比的化学剂用于控制压裂液转向意义重大。
Investment and Cost Control on Chemical Engineering Construction Projects in Feasibility Study.
化工建设项目前期可研工作中投资和成本的控制
Historically,the most commonly used, lowest cost stencil fabrication method has been chemical etching.
过去，普遍采用得低成本得钢网制作方法是化学腐蚀。
The Realization of Chemical Reagent Management System Based on Logistics Management and Cost Accounting
基于物流管理与成本核算的化学试剂管理系统的实现
Historically, the most commonly used, lowest cost stencil fabrication method has been chemical etching.
过去，普遍采用的低成本的钢网制作方法是化学腐蚀。
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