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- Sewall Wnight thought it desirable to weight each observation directly as the pollen frequency. 赛沃尔·劳埃特认为把每次观测直接加权作为花粉频率是可取的。
- There is a high pollen count in the air. 空气中有很高的花粉计数。
- Sewall Wnight thought it desirable to weight each observation directly as the pollen frequency 赛沃尔?劳埃特认为把每次观测直接加权作为花粉频率是可取的。
- Stamen is in the middle of a flower and may produce pollen. 雄蕊长在花的中央，能产生花粉。
- He varied the transmission frequency. 他变换了无线电传送的频率。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
- A microscopic fossil, as of a pollen grain or unicellular organism. 微体化石一种微小的化石，如花粉粒或单细胞有机体的化石
- The workers have little pollen baskets on their legs. 工蜂脚上有装花粉的小"篮子"。
- Anther is a part of a flower that contains the pollen. 花药是花的雄蕊上带花粉的部分。
- Fatal accidents have decreased in frequency over recent years. 近年来死亡事故发生的频率已经下降。
- The innermost wall of a spore or pollen grain. 内壁孢子或花粉粒最深处的壁
- Pollen sterile blossoms lack normal turgor. 花粉不育的花朵缺乏正常的膨压现象。
- We can often correlate age with frequency of illness. 年龄的大小往往与发病率有关。
- Accidents on that highway are happening with increasing frequency. 那条高速公路上车祸发生得越来越频繁。
- The pollen is shed directly on the stigma. 花粉直接散落在柱头上。
- Some people have an allergy to pollen. 一些人对花粉有过敏反应。
- Nectar and pollen are very nutritious. 花蜜和花粉是很有营养的。
- Pollinated by wind-dispersed pollen. 风媒传粉的通过风的飘散来传播花粉的
- He tuned his radio to the police frequency. 他把无线电调到警方的频率。
- pollen frequency 花粉总数(玻片上每平方厘米)
