n. saddling
misc. riser plate ; chair plate ; seat board
因此，座板阀改进的意义更大。
座板：曲木板，采多层薄木皮热压成型制作而成；
Seat Board:Molded Plywood Construction Consisting of Multiple-Ply Pre-Formed Wooden Veneer;
机台背板、座板皆配备导航，可供各种配件仪器之挂载。
Plant backplane, Block boards are equipped with navigation, all kinds of accessories for the apparatus to mount.
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