A 6-wheel model of towed howitzer train is made.

建立了牵引火炮列车6轮输入模型；

System optimal design of howitzer is an important tool of system design.

火炮总体优化设计是总体设计的重要工具。

This is the heavy fire-power of the Libyan Army - a 155mm Palmaria self-propelled howitzer.

上图代表了利比亚陆军的强大火力，155毫米Palmaria型自行火炮。

More need on system design of howitzer is required because of the difficulty in design of modern howitzer.

由于现代火炮设计的难度越来越大，对火炮总体设计提出了更高的要求。

One resulting scandal, involving agents in a Bofors howitzer gun contract, dragged on for almost the duration of the ban; it was ended earlier this year.

结果一场涉及博福斯（Bofors）榴弹炮合同的丑闻拖延了几乎整个禁令有效期限，直到今年初才结束。

The Chinese-designed mortar-howitzer system was first revealed by the NORINCO for the export market in 2001, but the system did not receive any order.

中国设计的迫榴炮系统在2001年用于出口市场被北方工业总公司（NORINCO）首次展示，但是系统没有接受到任何定单。

The key problems of finite element modeling and analysis of nonlinear structural dynamics for the whole firing course of towed howitzer are investigated.

研究牵引火炮全发射过程非线性结构动力学有限元建模和分析中的关键问题。

The results showed that the model is feasibility and accurate, and the dynamics simulation can provide reference for overall design and test. method improvement of truck-mounted howitzer system.

该动力学仿真可为车载炮总体设计和试验方法改进提供参考。