词汇	花史
释义	花史 huā shǐ记载各种花卉莳植、色味、特质、用途的专书。
随便看	pulse generators pulse generator, stochastic pulse generator system pulse generator using amplifiers pulse generator using beam deflection tube pulse generator using ferro-resonant elements pulse generator using field effect transistors pulse generator using operational amplifiers pulse generator using parametrons pulse generator using semiconductors pulse generator using thyristors pulse generator without positive feedback Pulse gilding Pulse glare pulse glass pulse glide display pulse glide path Pulse Glow Ion Nitrogen Furnace pulse GMAW pulse-governed oscillator Pulse graph pulse group Pulse Group Repetition Frequency pulse group repetition rate pulse groups per second