- 門(door; gate)
- 甲(hard shell layer; first)
A sturdy door like armor is used to block and regulate water flow—that is a sluice gate or dam gate.
rotor sluice gate
A sluice gate is a type of hydraulic engineering structure.
rotor sluice gate
A sluice gate is a type of hydraulic engineering structure.
A sturdy door like armor is used to block and regulate water flow—that is a sluice gate or dam gate.
A sturdy door like armor is used to block and regulate water flow—that is a sluice gate or dam gate.
rotor sluice gate
rotor sluice gate
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