论述用辐射热平衡法（热丝法）测量材料半球全发射率的原理；
The principle of measuring the hemisphere integrated radiant emittance by the radiation heat-equilibrium method (filament method) was discussed.
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 key problems of finite element modeling and analysis of nonlinear structural dynamics for the whole firing course of towed howitzer are investigated.
单人QRP(全波段或单波段)组：单人完成所有通联操作及日志记录。不允许使用任何形式的辅助手段。总发射功率不超过5瓦。
Single Operator QRP (all Band or Single Band) : One person performs all of the operating and logging functions. QSO alerting assistance is not permitted. Total output power must not exceed 5 watts.
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