trace substance的例句大全

pure porous silica gel has been directly applied to humidity measurement and the detection of trace substance in solvent, after which had been adsorbed and condensed by silica gel.

具有高吸附能力的多孔硅胶已被直接运用于湿度传感器，同时也被广泛应用于各种溶剂中微量成分的富集检测。

Objective : To develop a method for the detection of trace organic substance in deionized water.

目的: 研究一种去离子水中微量有机物质的测定方法.

The walnut is rich in fat protein, sugar, Vitamin, many kinds of substance and trace element.

核桃富含脂肪蛋白质 、 糖类 、 维生素及多种矿物质和微量元素.

Y: Right, but the thing is, when the bismuth combines with the trace amounts of sulfur in your saliva and in your gastrointestinal tract, it reacts to form a black substance called bismuth sulfide.

Y:嗯。但是，铋与唾液和胃肠道中微量的硫作用会生成一种黑色的物质——硫化铋。

The Feature Analysis of Trace Elemental in Water-Soluble Substance of the Composite Family

菊科植物水提物微量元素特征分析