“ponderosa pine”的概念、定义、翻译、参考文献-科学参考

单词	ponderosa pine
释义	ponderosa pine [´pän·dǝ´rō·sǝ `pīn] ^BOTANY Pinus ponderosa.A hard pine tree of western North America; attains a height of 150-225 feet (46-69 meters) and has long, dark-green leaves in bundles of two to five and tawny, yellowish bark.
随便看	pulse-train analysis pulse transformer pulse transmitter pulse-type altimeter pulse-type telemetering pulse voltage pulse wave pulse width pulse-width discriminator pulse-width modulated static inverter pulse-width modulation pulse-width modulation-frequency modulation pulse window pulsing key pulsing transformer pulsometer pultrusion pulverite pulverization pulverizer pulvillus pulvinus puma pumice pumice fall

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