Abstract: A rock direct tensile test platform suitable for all material test machines includes a support frame. A top of the support frame is fixed with a top plate, and a bearing plate is provided above the top plate. The bearing plate is provided with a plurality of vertical force transferring rods. The force transferring rods vertically penetrate through the top plate and have a sliding fit with the top plate. Lower ends of the force transferring rods are provided with a tensile base. A top of the tensile base is provided with a lower clamp holder. A bottom of the top plate is provided with an upper clamp holder, and a clamp center of the upper clamp holder coincides with a clamp center of the lower clamp holder.

Abstract: An electronic candle may include a main candle body, a signal processing module, a candle flame piece, a lighting unit to light up the candle flame piece and an air flow detecting unit, wherein the candle flame piece extends from a through hole from an inner portion of the main candle body to an outer portion thereof, and edges of the candle flame piece axially shrinks towards a center portion of the candle flame piece; the lighting unit is disposed below the candle flame piece to light up the candle flame piece; the air flow detecting unit is disposed at an inner portion of the electronic candle, and the air flow detecting unit and the lighting unit are both connected to the signal processing module.