a homogeneous appearance 说谁呢（分析）？ 样品应该不是黑的，看下标准名称：astm d4870 - 09 standard test method for determination of total sediment in residual fuels （ 残渣燃料油总沉淀物测定法 ）。 1. scope 1.1 this test method covers the determination of total sediment up to 0.40 % m/m for distillate fuel oils containing residual components and to 0.50 % m/m in residual fuel oils having a maximum viscosity of 55 cst (mm2/s) at 100°c. ....（原文现在手边没有，网上找了一段，明天再看看上下文看如何理解） .................................. 查看更多
第1天
关注盖德视界
添加小助手
