发气量试验方法的优点是能够迅速和准确地确定 型砂中有效煤粉的具体含量。
The gas evolution test method has the advantage that the effective coal dust content in green sand can be determined rapidly and accurately.
结果表明，对原砂进行表面处理可以提高粘结剂的粘结效率，提高覆膜砂的强度，减少树脂加入量，降低发气量。
The results have shown that the precoated sands with low resin content, high strength, and low gas evoluti…
方法：受试的对象为可疑的运动诱导的支气管痉挛的健康、体格健壮的个体，用乙酰胆碱激发气道反应后，测定一秒钟用力呼气量。
Methods: Healthy, athletic subjects who are suspected of having exercise-induced bronchospasm were recruited, and FEV1 values were determined following provocative airway challenges with methacholine.
方法：受试的对象为可疑的运动诱导的支气管痉挛的健康、体格健壮的个体，用乙酰胆碱激发气道反应后，测定一秒钟用力呼气量。
Methods: Healthy, athletic subjects who are suspected of having exercise-induced bronchospasm were recruited, and FEV1 values were determined following provocative airway challenges with methacholine.
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