lead frame bond

The results, based on the study of the symptom and development of the disease in the field and the fluoride concentration in the air, indicate that the peony leaf tip blight is a non infective disease caused by air fluoride pollution.

根据牡丹叶尖枯病的症状特点和田间扩展方式，以及对大气和牡丹叶片中氟浓度的测定，结果证实牡丹叶尖枯病是由大气氟污染引起的一种非侵染性病害。

Study on Selection System of Somaclonal Variation Resistant to Tip Blight in Garlic

大蒜抗叶枯病体细胞无性系筛选体系研究

A Study on the Symptom and Pathogenicity of Peony Leaf Tip Blight

牡丹叶尖枯病的症状和发生原因

The resistance of 128 peony varieties to air fluoride pollution has been determined according to the disease index of peony leaf tip blight in the region of air fluoride pollution.

以污染区牡丹叶尖枯病的病情指数为依据，测定了128个牡丹品种对大气氟污染的抗性。