haematometer

例句：

1. 1. The doctor uses a haematometer to check the patient's blood count.
   医生使用血细胞计数器来检查患者的血细胞计数。
2. 2. He measured his hemoglobin levels with a hemocytometer.
   他用血球计数器测量了他的血红蛋白水平。
3. 3. The hematocrit reader in the hospital is used to analyze the patient's blood composition.
   医院里的血球计数器用于分析患者的血液成分。