单词	ray tracheid
释义	ray tracheid noun : any of various chiefly marginal tracheids in the vascular rays of some gymnosperms that have bordered pits and lack living contents but resemble typical ray cells in position and shape Word History Etymology ray entry 2
随便看	nitrobenzene nitrobenzenes nitrocalcite nitrocalcites nitrocellulose nitrocelluloses nitrochloroforms nitrocotta nitrocotton nitrocottons nitroethane nitroform nitrofuran nitrofurans nitrofurantoins nitrogation nitrogelatin nitrogelatine nitrogen nitrogen balance nitrogen chloride nitrogen cycle nitrogen dioxide nitrogen family nitrogen fixation

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