Abstract: An indicating device for a dual power automatic transfer switch, which includes a first driving part connected to a first moving contact of a first power supply and a second driving part connected to a second moving contact of a second power supply; the indicating device includes a mechanical indicating device, an electrical indicating device and an indicating part acting on the mechanical indicating device and the electrical indicating device; the first and the second driving part respectively drive the indicating part to move; the electric indicating device at least includes a first and second switching device; the first switching device at least includes a first contact of the first switching device and a second contact of the first switching device which are connected in parallel; the second switching device at least includes a first contact and a second contact of the second switching device which are connected in parallel.

Abstract: The present invention discloses the preparation method of cis-p-menthane-1,8-di-secondary amine compounds and their application in weed control. The preparation method is as follows: cis-p-menthane-1,8-di-Schiff base compounds are used as the raw material, and the reducing agent is added in batches into the raw material in a polar organic solvent at ?10˜50° C. to react for 1˜24 h; after the reaction is complete, the reaction solution is quenched with distilled water and extracted with dichloromethane, and the extract phase is dried with anhydrous sodium sulfate, filtered with a filter and then distilled under reduced pressure to obtain crude cis-p-menthane-1,8-di-secondary amine compounds, which are purified into the pure product through recrystallization or silica gel column chromatography.

Abstract: Provided are a method for screening for nanobodies and a corresponding system. The method uses polymerase chain reactions and cDNA 5? end rapid amplification technology to screen for and obtain nanobodies. The experiment cycle requires only approximately 21 days.

Abstract: A switching mechanism for a dual power supply transfer switch. The switching mechanism has a switching assembly, which includes a driving plate, a driving rod, an actuator and an auxiliary mechanism. The driving plate includes an arc-shaped driving groove. The driving rod extends into the driving groove. The auxiliary mechanism includes a spring. The driving plate is able to rotate under an external force. The driving groove bypasses the driving rod when an end of the driving groove does not contact the driving rod, and the driving groove pushes the driving rod to rotate over a first angle and urges the spring to deform when the end of the driving groove contacts the driving rod. The spring recovers and drives the driving rod to rotate over a second angle after the spring having passed a dead point, thus causing the actuator turning on or off a first power supply. The switching mechanism also includes another switching assembly for switching a second power supply.

Abstract: A switching mechanism for a dual power supply transfer switch. The switching mechanism has a switching assembly, which includes a driving plate, a driving rod, an actuator and an auxiliary mechanism. The driving plate includes an arc-shaped driving groove. The driving rod extends into the driving groove. The auxiliary mechanism includes a spring. The driving plate is able to rotate under an external force. The driving groove bypasses the driving rod when an end of the driving groove does not contact the driving rod, and the driving groove pushes the driving rod to rotate over a first angle and urges the spring to deform when the end of the driving groove contacts the driving rod. The spring recovers and drives the driving rod to rotate over a second angle after the spring having passed a dead point, thus causing the actuator turning on or off a first power supply. The switching mechanism also includes another switching assembly for switching a second power supply.

Abstract: The present disclosure provides a transfer switching equipment, comprising a first switch set and a second switch set. The transfer switching equipment is configured in a way that during the switching from a closed state of one of the first switch set and the second switch set to a closed state of the other of the first switch set and the second switch set, there is a state in which the neutral poles of the first switch set and the neutral pole of the second switch set are closed at the same time while all phase poles of the first switch set and all phase poles of the second switch set are all opened. The transfer switching equipment has a simple and reliable structure and occupies a small space and can provide continuous voltage with high-quality during switching the power supply.

Abstract: Provided are a method for screening for nanobodies and a corresponding system. The method uses polymerase chain reactions and cDNA 5? end rapid amplification technology to screen for and obtain nanobodies. The experiment cycle requires only approximately 21 days.

Abstract: The present disclosure provides a transfer switching equipment, comprising a first switch set and a second switch set. The transfer switching equipment is configured in a way that during the switching from a closed state of one of the first switch set and the second switch set to a closed state of the other of the first switch set and the second switch set, there is a state in which the neutral poles of the first switch set and the neutral pole of the second switch set are closed at the same time while all phase poles of the first switch set and all phase poles of the second switch set are all opened. The transfer switching equipment has a simple and reliable structure and occupies a small space and can provide continuous voltage with high-quality during switching the power supply.

Abstract: Disclosed is a human-machine interface apparatus (10), comprising a display unit (102) and a control unit (101), wherein the display unit (102) and the control unit (101) have two types of installation state. In the first installation state, the display unit (102) and the control unit (101) are directly connected together, and in the second installation state, the display unit (102) and the control unit (101) are installed in two locations, respectively, and connected via a cable (104). Since the installation state of the display unit (102) and the control unit (101) can be switched between the two types of installation state as required, flexible installation is provided for a user according to the working environment. Further disclosed is a control cabinet including the present human-machine interface.