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。

youdao

Everything they would need in South China, including artillery, ammunition, provisions and supplies of all kinds had to be ferried over the river by these primitive means.

渡江之后，一切军需包括大炮、弹药、给养和各种供应都得靠这种原始的运输工具运到对岸。

youdao

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。

youdao

But he continued to cling on despite the destruction of his heavy artillery and ammunition dumps, the defection of most of his troops and the surrender on April 5th of his generals.

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Fuel, food, parts and ammunition barely reach Ghazni from Kabul and the Afghans rely on American artillery, air power and medical treatment.

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