Minute fragments of shoot apices are proverbially difficult to culture.
微小的莖尖切段通常是難以培養(yǎng)的.
辭典例句
This concept has now been replaced, for stem apices, by the tunica - corpus theory.
此觀點(diǎn)目前已經(jīng)被原套原體學(xué)說所取代.
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