Primary Reference Material 一级标准物质 ; 基准标准物质
primary material control 原材料控制
primary statistical material 原始统计资料
primary organic material 原始有机质
the primary source material 烃类的母质
primary packaging material 初级包装材料
primary colloidal material 原生胶体物质
Silicon oxide powder, with grain size of 150μm and 48μm, silica sol, ammonium di-hydrogen phosphate, light magnesium oxide and running water was choosed as primary material.
本工艺采用粒度分别是150μm和48μm的粗细石英粉料、硅溶胶、磷酸二氢氨、轻质氧化镁和自来水作为硅溶胶陶瓷型的原材料。
参考来源 - 硅溶胶陶瓷型精密铸造工艺的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Conventional solar cells use one primary material, which only captures one part of the spectrum efficiently.
传统的太阳能电池主要使用一种材料，只高效捕捉其一部分频段的能量。
Iodine is the essential microelement, and the primary material for thyroid to synthesize thyroid hormones.
碘是机体必需的微量元素，是甲状腺合成甲状腺激素的基本原料。
Thee facades "pixels" consist of three primary material types: glass pixels, sandstone pixels, and vegetated pixels.
立面设计主要通过三种不同的材料表达“像素”的概念：玻璃像素、砂岩像素和绿植像素。
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