摘要：【中文】本发明公开了一种基于二次成形的移液器吸头、制备方法及应用，属于微型固相萃取技术领域，包括以下步骤：S1：二次成形；S2：后修饰。在所述步骤S1中，二次成形的方式为加热、加压与注模中的一种或多种结合，在所述步骤S1中，二次成形后的形状根据SPE的要求确定。本发明基于商品化移液器吸头的二次定形和物理或化学后修饰改性而成，在保留商品化一次成形移液器吸头所提供的优点的同时；还具有免填充吸附剂、更高的萃取效率以及可定制的形状和尺寸等优点，能更好地满足不同的分析目的与要求；而且该二次成形后修饰移液器吸头的制备方法简单，在应用方面也具有样品用量少、普适性强等优点。 【EN】The invention discloses a pipette tip based on secondary forming, a preparation method and application, which belong to the technical field of micro solid-phase extraction and comprise the following steps: s1: secondary forming; s2: and (5) post-modification. In step S1, the secondary forming is performed by one or more of heating, pressing and injection molding, and in step S1, the post-secondary forming shape is determined according to the SPE requirements. The invention is formed by secondary shaping and physical or chemical post-modification based on the commercialized pipette tip, and the advantages provided by the commercialized once-shaped pipette tip are kept; the method also has the advantages of no adsorbent filling, higher extraction efficiency, customizable shape and size and the like, and can better meet different analysis purposes and requirements; and the preparation method of the post-secondary-forming modified pipette tip is simple, and the post-secondary-forming modified pipette tip also has the advantages of small sample consumption, strong universality and the like in the application aspect.

摘要：【中文】本发明公开了一种道岔模拟操作盘，包括模拟操作电路；所述模拟操作电路包括四个接线端子、2个3档钮子开关、2个2组3位式接点钮子开关、2个直流发光二级管、1个直流电流表头、变压器、电容、电阻、熔断器和整流桥堆；钮子开关K2第二组接点的引脚分别连接钮子开关K1和电容C，上、下两个引脚分别连接两个发光二级管；钮子开关K2第一组接点的中间引脚连接开关K1第一组接点的中间引脚，上、下引脚分别连接X1、X2两个接线端子；四个连接柱外接端子用于连接转辙机。本发明可以快速检测出转辙机内部配线是否正确，且使用便捷。 【EN】The invention discloses a switch simulation operation panel, which comprises a simulation operation circuit; the analog operation circuit comprises four wiring terminals, 2 3-gear button switches, 2 groups of 3-bit contact button switches, 2 direct current light emitting diodes, 1 direct current meter head, a transformer, a capacitor, a resistor, a fuse and a rectifier bridge stack; pins of a second group of contacts of the toggle switch K2 are respectively connected with the toggle switch K1 and the capacitor C, and the upper pin and the lower pin are respectively connected with the two light emitting diodes; the middle pin of the first group of the connection points of the button switch K2 is connected with the middle pin of the first group of the connection points of the switch K1, and the upper pin and the lower pin are respectively connected with two wiring terminals X1 and X2; and the four connecting column external terminals are used for connecting a switch machine. The invention can quickly detect whether the internal wiring of the switch machine is correct or not, and is convenient and fast to use.