Abstract: An air-floating guide rail device includes a guide rail unit, a slider unit, and a linear motor unit. The guide rail unit includes a guide rail body and two air-floating block sets made of a material different from that of the guide rail body and each including top and side air-floating blocks. The slider unit includes a main sliding seat and two lateral sliding seats connected integrally to the main sliding seat and each having first and second guiding surfaces transverse to each other and disposed respectively adjacent to corresponding top and side air-floating blocks, and first and second air guiding passages connecting the first and second guiding surfaces to the external environment. The linear motor unit includes a stator and a mover mounted fixedly to the main sliding seat and movable relative to the stator for driving linear movement of the slider unit relative to the guide rail unit.

Abstract: An RF testing method is applied between a testing instrument and multiple devices under test at least including a first DUT and a second DUT. The testing instrument includes a signal generator and a signal analyzer. A sync signal is sent to the testing instrument and the first DUT, so that the first DUT occupies the signal generator to receive a testing signal from the signal generator. The first DUT sends an uplink signal to the signal analyzer based on the testing signal to occupy the signal analyzer for signal analysis at a first point in time. The sync signal is sent to the testing instrument and the second DUT, so that the second DUT occupies the signal generator to receive the testing signal from the signal generator at a second point in time. The first point in time is parallel to the second point in time.

Abstract: A safe braking apparatus using in a two-wheel vehicle includes a left brake unit that drives the real brake unit and the front brake unit simultaneously, a right brake unit that drives the real brake unit and the front brake unit simultaneously, a front brake unit that actuates a front-wheel brake of said two-wheel vehicles, and a real brake unit that actuates a real-wheel brake of said two-wheel vehicles. Wherein, the front brake unit always works less than the real brake unit in movement.

Abstract: A safe braking apparatus using in a two-wheel vehicle includes a left brake unit that drives the real brake unit and the front brake unit simultaneously, a right brake unit that drives the real brake unit and the front brake unit simultaneously, a front brake unit that actuates a front-wheel brake of said two-wheel vehicles, and a real brake unit that actuates a real-wheel brake of said two-wheel vehicles.

Abstract: A gasoline engine booster which includes a casing having a first port connected to the atmosphere, a second port connected to the intake manifold, a first air passage of smaller diameter and a second air passage of bigger diameter connected in series between the first port and the second port, an adjusting device longitudinally movably fastened to the inside of the second air passage to hold a spring, a steel ball supported on the spring and forced by it to stop the connection between the first air passage and the second air passage, and a tightening up screw threaded into a screw hole on the casing to hold down the adjusting device, whereby when the pressure in the intake manifold drops below a predetermined value, outside air is induced into the first air passage to force the steel ball away from the first air passage, so that outside air flows through the second air passage into the intake manifold of the gasoline engine to mix with fuel oil for complete combustion.