Abstract: The present disclosure provides a portable power tool. The power tool includes a tool body, a tool assembly and a gas pressure detection assembly. The tool assembly includes a tool bit furnished detachably in an end of the tool body. The gas pressure detection assembly is furnished detachably in another end of the tool body. The gas pressure detection assembly is communicatively coupled to the tool body.

Abstract: A detachable aerial photographic apparatus includes a carrier, an aircraft, a take-off delaying device and a trigger. The aircraft includes a main body disposed on the carrier, at least one propeller is pivotally furnished in the main body and a camera disposed on the main body. The take-off delaying device includes a movable member disposed on the carrier and at least one stopper connected to the movable member. The stopper is detachably connected to the aircraft for prevent the aircraft from taking off. The movable member is for detaching the stopper from the aircraft for releasing the aircraft. The trigger is electrically connected to the aircraft and the take-off delaying device. The trigger is for triggering the propeller and the movable member. A first time point when the propeller is triggered by the trigger is earlier than a second time point when the stopper is detached from the aircraft.

Abstract: A detachable aerial photographic apparatus includes a carrier, an aircraft, a take-off delaying device and a trigger. The aircraft includes a main body disposed on the carrier, at least one propeller is pivotally furnished in the main body and a camera disposed on the main body. The take-off delaying device includes a movable member disposed on the carrier and at least one stopper connected to the movable member. The stopper is detachably connected to the aircraft for prevent the aircraft from taking off. The movable member is for detaching the stopper from the aircraft for releasing the aircraft. The trigger is electrically connected to the aircraft and the take-off delaying device. The trigger is for triggering the propeller and the movable member. A first time point when the propeller is triggered by the trigger is earlier than a second time point when the stopper is detached from the aircraft.

Abstract: The present disclosure provides a portable power tool. The power tool includes a tool body, a tool assembly and a gas pressure detection assembly. The tool assembly is furnished detachably in an end of the tool body. The gas pressure detection assembly is furnished detachably in another end of the tool body. The gas pressure is electrical coupled to the tool body.

Abstract: A lifting resilient garment at least including a pair of trousers and the zip-fastening devices disposed on the trousers is provided. The lifting resilient garment is formed of at least one elastic material. When the zip-fastening device is zipped up, the trouser is tightened and a first cross-sectional area (A1) of the trouser is created consequently. When the zip-fastening device is zipped down, a second cross-sectional area (A2) of the trouser is created consequently. The first cross-sectional area (A1) is smaller than the second cross-sectional area (A2).

Abstract: The invention discloses a novel control system for a Poly-Chromatic light-emitting diode (LED) lighting system, and applies feed forward and feedback control techniques to regulate the color and luminous outputs. Also, the control system is proposed for achieving luminous and color consistency for Poly-Chromatic LED lighting.

Abstract: The invention discloses a novel control system for a Poly-Chromatic light-emitting diode (LED) lighting system, and applies feed forward and feedback control techniques to regulate the color and luminous outputs. Also, the control system is proposed for achieving luminous and color consistency for Poly-Chromatic LED lighting.