细孔与幼绳同用或可作保护板用。
Small hole can be used with thin ropes if necessary, or as a belay plate.
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提出了建立板栗基因库，保护板栗种质资源的合理建议。
It should build Chinese chestnut gene bank to protect the Chinese chestnut resources.
安装前应将保护翅片的防护板去掉。
Take away the plate which protect wing before fixing.
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