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。
More need on system design of howitzer is required because of the difficulty in design of modern howitzer.
现代火炮身管多用高强度钢制造，这类材料在拉伸和压缩时的力学性能存在明显差异。
Present gun barrels are made up of high-strength steel. This type of material possess the differential strength in tension and compression.
点传火技术是大口径火炮装药中的关键技术之一，现代火炮装药中几乎全部选择了中心点火的结构形式。
The technology of ignition and flame spreading is one of key technology of charge design in large caliber guns, which almost chose center core igniter system.
点传火技术是大口径火炮装药中的关键技术之一，现代火炮装药中几乎全部选择了中心点火的结构形式。
The technology of ignition and flame spreading is one of key technology of charge design in large caliber guns, which almost chose center core igniter system.
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