For ammunition to break through, artillery shells need to be hardened by adding certain minerals to the steel.

为了让炮弹能够打穿，弹壳的钢里需要加入一定的矿物质来增加硬度。

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The laser turrets in the smaller model were turned into artillery launchers, with the hollows within the bulbous octuptarra heads transformed into ammunition storage for the chain-fed cannons.

小型号上的激光炮塔被改为炮弹发射器，而八目兽机器人球形头部内的空洞变成弹药库，用于存放连续供弹火炮的炮弹。

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The maneuver also required distributing fifty-seven tons of new maps, uprooting and reinstalling an extensive signal-wire network, and stockpiling fuel and ammunition, including shells for twelve hundred guns in the army's 108 artillery battalions.

WSJ: Book Review: The Guns at Last Light