“pneumatic seed-metering device”的概念、定义、翻译、参考文献-科学参考

单词	pneumatic seed-metering device
释义	pneumatic seed-metering device Encyclopedia 农学气吹式排种器释 pneumatic seed-metering device气吹式排种器以窝眼轮式排种器为基础，改进清种装置，以气流为清种手段的排种器（见图）。
随便看	U-process resistivity UPRONA UPS upsampling UPSC upscaling of fluid flow in porous media upscattering up-selling upsetting upshift upshot upside upside-down Upsilon particle upsilon particle Upsilon粒子 upslip upslope UPS projection upstream upstream activating sequence upstream activation sequence upstream activation sequence (UAS) upstream expressing sequence upstream promoter element

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