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The invention concerns an annual calendar mechanism for a timepiece including a date disc provided with a first inner toothing including thirty one teeth, a date drive wheel set in order to control(More)
公开了酯胺组合物及其衍生物。 所述酯胺包含复分解生成的C10-C17单不饱和酸、十八碳烯-1,18-二酸、或它们的酯衍生物与叔烷醇胺的反应产物。 也公开了通过对酯胺进行季铵化、磺化、烷氧基化、硫酸化、和/或亚硫酸化而制备的衍生物。 在一个方面中,C10-C17单不饱和酸或十八碳烯-1,18-二酸的酯衍生物为低级烷基酯。(More)
Spectacles for use in an eye monitoring system include a pair of ocular frames and a sensor unit adapted to be positioned adjacent an eye of the wearer. A nose bridge connects the ocular frames and(More)