词汇	proof of cost
释义	proof of cost 经成本的检验对证
随便看	blasting throwing haulage blasting tlaeory blasting toe-shooting blasting toe-shooting method blasting tool blasting-tool blasting tools blasting tools and materials blasting too-shooting offshore Blasting top coal caving blasting top-coal caving face blasting trail blasting treatment blasting trenching blasting tumbling machine blasting-tumbling machine blasting tunneling BLASTING TYPEONE ACTION SAFETY VALVE blasting typhus blasting unit blasting viberation blasting vibrartion blasting vibration Blasting vibration control Blasting vibration effect