1. Characteristic 1: a component composed of molecules according to formula (1), wherein (a) a is a formula (2) or (3)；(b) R1 is h, F, Cl, Br, I, CN, no.832222；C₁₋₆ substituted or unsubstituted alkyl, substituted or unsubstituted C₂₋₆ alkenyl, substituted or unsubstituted C₁₋₆ alkoxy, substituted or unsubstituted C₂₋₆ alkenyloxy, substituted or unsubstituted C₃₋₁₀ cycloalkyl, substituted C₃₋₁₀ cycloalkenyl or unsubstituted, substituted or unsubstituted C₆₋₂₀ aryl, substituted or unsubstituted C₁₋₂₀ heterocyclyl, OR⁹,C (3DX) RC (3DX) ORC (3DX) N (R)N (R)N (R) C (3DX) RS (O) RS (O) ORS (O) N (R)OR S (O) RAt each R1,a. Replaced, one or more substitutes selected from F, Cl, Br, I, CN, no832222；1. Lease land No. c833218331 and 832626；C₂₋₆ alkenyl,C₁₋₆ haloalkyl,haloalkenyl C₂₋₆,Halogenated tar c8321xi c831653262；haloalkenyloxy C₁₋₆,C₃₋₁₀ cycloalkyl,C₃₋₁₀ halocycloalkyl,cycloalkenyl C₃₋₁₀,halocicloalquenilo C₃₋₁₀,Or8313,S (O) ORaryl C₆₋₂₀,or C₁₋₆ heterocyclyl,(each item can be replaced by r8313)；(c) R2 is h, F, Cl, Br, I, CN, no.832222；C₁₋₆ substituted or unsubstituted alkyl, substituted or unsubstituted C₂₋₆ alkenyl, substituted or unsubstituted C₁₋₆ alkoxy, substituted or unsubstituted C₂₋₆ alkenyloxy, substituted or unsubstituted C₃₋₁₀ cycloalkyl, substituted C₃₋₁₀ cycloalkenyl or unsubstituted, substituted or unsubstituted C₆₋₂₀ aryl, substituted or unsubstituted CC heterocyclyl, OR⁹,C (3DX) RC (3DX) ORC (3DX) N (R)N (R)N (R) C (3DX) RSR8313,S (O) ORo R S (O) ROn every track,a. Replaced, one or more substitutes selected from F, Cl, Br, I, CN, no832222；1. Lease land No. c833218331 and 832626；C₂₋₆ alkenyl,C₁₋₆ haloalkyl,haloalkenyl C₂₋₆,Halogenated tar c8321xi c831653262；haloalqueniloxi cicloalquilo Ccycloalkenyl C₃₋₁₀,C₃₋₁₀ halocycloalkyl,halocicloalquenilo C₃₋₁₀,Or8313,S (O) ORaryl C₆₋₂₀,O heterosexual c83218c83318322； 8320；(each item can be replaced by r8313)；(d) R3 is h, F, Cl, Br, I, CN, no.832222；C₁₋₆ substituted or unsubstituted alkyl, substituted or unsubstitute
