trace materials

基本解释

This is applicable to the label and trace of raw materials, accessory parts, semi-finished products and finished products.
适用于本公司原材料、协配件、半成品、成品的标识和追溯。
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With high sensitivity and specificity, the method of air pressure ionic mass spectrum (API MS) is suitable for measurements of trace materials in high purity gases.
大气压离子质谱（API-MS）法以其高灵敏度及特效性，特别适合于分析高纯气体中的痕量物质。
The total mixed diet granulated feed product is prepared by the following method of: producing a compound trace element premix by using various trace element raw materials and inorganic carriers;
所说的全混合饲粮颗粒料产品由以下方法制得：用各种微量元素原料和无机载体生产成复合微量元素预混剂；
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Rather, as a consequence of injecting water and sand into the shale formation to crack the rocks so gas and oil will flow, massive amounts of waste water comes back to the surface with significant amounts of contaminants as a result of leaching out salt, heavy metals and trace amounts of radioactive materials from the rock formation itself.
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New regulations likely to be proposed by the State Department next year may follow guidelines being drafted by the UN and the OECD, a rich-country club, that will advise companies on how best to trace the origin of their materials.
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It is also important to make sure that operators of Explosive Detection Systems (EDS) and Trace Detection Systems (TDS) learn to identify specific X-ray transmission properties of the materials they are called upon to identify.
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痕量物质
The determination limits of the methods for PCBs, PAHs and OCPs are 0.110.48ng/L, 0.431.61ng/L and 0.030.37ng/L, respectively, which is available for detecting trace materials.
该方法可以满足水中痕量物质的检测与分析。