DIN EN 50305 Railway applications-Railway rolling cables having special fire performance-Test methods, Clause 9.2 Toxicity.
DIN EN 50305铁路设施-具有特殊防火性能的轨道车辆电缆-试验方法，条款9.2毒性试验。
EN50305 Railway applications-Railway rolling cables having special fire performance-Test methods, Clause 9.2 Toxicity.
EN 50305铁路设施-具有特殊防火性能的轨道车辆电缆-试验方法，条款9.2毒性试验。
Flufenzine was a new kind of acaricide which had low toxicity, high activity and special mode of action. Fluenzine was prepared by using 2-chlorobenzoic acid as start material.
氟螨嗪是一种低毒、高效、机理独特的新型四嗪类杀螨剂。叙述了以2-氯苯甲酸为起始原料合成氟螨嗪的方法。
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