双打有两倍的动态负载率和单一的单位，可以安装到位的单打在大多数应用中由于越来越多类似的足迹。
Doubles have twice the dynamic load rating of single units and can be mounted in place of the singles in most applications due to similar mounting footprint.
双打有两倍的动态负载率和单一的单位，可以安装到位的单打在大多数应用中由于越来越多类似的足迹。
Doubles have twice the dynamic load rating of single units and can be mounted in place of the singles in most applications due to similar mounting footprint.
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