Pero goes into the kitchen and comes back holding the mangled tail of a mortar shell he keeps under the counter.
披罗走进厨房，拿来了他放在柜台底下的一个毁坏了的迫击炮外壳。
The study results indicate that there is a soil liner shell outside the mortar liner shell, and the shear strength of the soil liner is obviously higher than the undisturbed soil.
研究结果表明，砂浆衬砌外侧存在一个抗剪强度明显高于原状土体的土质外衬。
The frame of electro-mechanical safety and arming device (S&A) is established, and the electro-mechanical S&A for the mortar shell fuze is designed at the end of the paper.
最后构建了引信机电式安全系统的系统框架，并结合迫击炮弹引信开展了机电式安全系统的设计。
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