讨论了近似求取由短振子组成的大阵的瞬态响应的方法。
The approximate method determining the transient response of large antenna arrays composed of short dipoles is discussed.
用正确的程序性知识指导练习以期达到提高单杠短振屈伸上技术教学效果的目的。
The correct procedural knowledge was used to instruct the practice in order to achieve the technical teaching effect goal of parallel bars.
研制的简易酸化井口装置由保护法兰、过渡短节、卡箍、闸阀、三通和抗振压力表等组成。
The simple well head assembly newly developed is comprised of protection flange, pup joint, clip, gate valve, tee joint and anti-vibration pressure meter.
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