THIOPHENE-2-CARBOXYLIC ACID (2,3-DIMETHOXY-BENZYLIDENE)-HYDRAZIDE

THIOPHENE-2-CARBOXYLIC ACID (5-BROMO-2-METHOXY-BENZYLIDENE)-HYDRAZIDE

THIOPHENE-2-SULFONIC ACID BENZYLIDENEAMIDE

Thoriated tungsten

Thoriated tungsten

Thoriated tungsten

Tin

锡

Tin

锡

Tin

锡

Tin

锡

Tin

锡

Tin

锡

Tin

锡

Tin/Lead

Tinned copper alloy, CuSn