wig wag造句

• Wig wag signals have already been removed.
• A Canadian version, known as the " Wig Wag ", was available in the 1970s.
• An automatic wig wag will rise out of view when the pressure in the system rises above the threshold.
• During the cycle, the motor operates continuously, and the solenoids on the " wig wag " engage agitation or spin.
• The wig wag signals, while no longer operating ( newer gates, red lights and bells have been installed at the crossing ), are one of only a handful still in existence nationwide.
• The photo to the left shows a manual wig wag which the operator swings to the right out of view when the air pressure is above the threshold where it will remain as long as the pressure is sufficient.
• Residents have a love-hate relationship with the trains, pushing the railroad to modify operations to make them quieter and less disruptive to traffic but also fighting to save the wig wag signals when BNSF made plans to remove them.
• Whirlpool ( Kenmore ) created a popular design demonstrating the complex mechanisms which could be used to produce different motions from a single motor with the so-called " wig wag " mechanism, which was used for decades until modern controls rendered it obsolete.