For studies in the field, the techniques of using capillary tubes to collect nectar and hand-held refractometer to measure sugar content are recommended.
对于一般的野外工作建议用毛细管采集后使用便携式旋光测糖仪测其糖含量。
For studies in the field, the techniques of using capillary tubes to collect nectar and hand-held refractometer to measure sugar content are recommended.
对于一般的野外工作建议用毛细管采集后使用便携式旋光测糖仪测其糖含量。
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