slab gate 中文意思是什麼
slab gate
解釋
平板閘門-
The stone slab in front of the gate bears a carving in relief of two dragons playing with a pearl, a symbol of imperial authority
雲石刻有二戲珠浮雕為皇家尊嚴的象徵,又是諭旨和敕令的標志。 -
Slab type sliding gate valve
平板式滑動閘閥
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