context: The structure of hardwoods is more complex. The water conducting capability is mostly taken care of by vessels: in some cases (oak, chestnut, ash) these are quite large and distinct, in others (buckeye, poplar, willow) too small to be seen without a hand lens. In discussing such woods it is customary to divide them into two large classes, ring-porous and diffuse-porous.
question: విలో చెట్టు చెక్కలో, ఆ చిన్న పాత్రలను చూడడానికి మీరు దేన్ని ఉపయోగించాలి?
answers: a hand lens