本课题按照定容取样方法和质量平衡原理，自行设计、制造、调试了中国首套全流稀释风道颗粒物测试系统。
According to the principle of the mass balance and constant volume sampling, a full-flow dilution tunnel particle sampling system was designed and adjusted.
并且按一定的精度和置信水平确定了这两项的合理取样数目。
The rational sampling number was determined in a given precision at a known confidence level.
任何情况下，一定不要签署任何文件确认加油方取样的正确性。
Do NOT at any point sign any documents to confirm correctness of suppliers samples.
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