the centrifugate from sth
centrifugate 是可数名词,多用于实验室或工业分离语境;from 后面接离心的来源或具体步骤,说明产物从何而来。
The centrifugate from the first spin was poured into a clean flask.
第一次离心得到的离心产物被倒进一个洁净的烧瓶里。
离心分离后得到的较稠产物。;以离心力分出之物
离心分离后得到的较稠产物。
The thicker product obtained from separation in a centrifuge.
After centrifuging the blood, the laboratory collected the centrifugate for further testing.
离心血液后,实验室收集了离心分离物用于进一步检测。
用法提示:centrifugate 在此为名词,指离心后得到的较稠产物。
The centrifuge separates the mixture, and the heavier centrifugate settles at the bottom.
离心机分离混合物,较重的离心产物沉到底部。
用法提示:centrifugate 作名词,表示离心分离后得到的较稠部分。
Researchers examined the centrifugate under a microscope to identify its components.
研究人员在显微镜下检查离心产物,以确定其成分。
用法提示:centrifugate 是名词,指离心分离所得的较稠产物。
centrifugate 是可数名词,多用于实验室或工业分离语境;from 后面接离心的来源或具体步骤,说明产物从何而来。
The centrifugate from the first spin was poured into a clean flask.
第一次离心得到的离心产物被倒进一个洁净的烧瓶里。
of 后面接被离心的原料、悬浮液或混合物,表示制成该产物的物质来源。
A centrifugate of the cell suspension was tested for protein content.
对细胞悬液的离心产物进行了蛋白质含量检测。
用 obtained after、obtained by 等过去分词短语后置修饰,常见于科技文献,用来交代产物的获取条件。
The centrifugate obtained after the second spin was noticeably thicker.
第二次离心后得到的离心产物明显更稠。
grammar · medium
易错句子The technician centrifugated the sample at high speed.
正确表达The technician centrifuged the sample at high speed.
centrifugate 是名词,指离心分离后得到的较稠产物,不能作动词;表示“用离心机分离”的动词是 centrifuge,过去式为 centrifuged。原句把名词误当成了动词,属于词性混淆。
grammar · medium
易错句子She placed the blood tubes in the centrifugate.
正确表达She placed the blood tubes in the centrifuge.
centrifugate 指离心后得到的产物,不是机器;放血样的机器是 centrifuge。两者拼写相近,学习者常把表示产物的名词错用来指设备,属于词义混淆。
grammar · medium
易错句子Centrifugate was collected from the bottom of the tube.
正确表达The centrifugate was collected from the bottom of the tube.
centrifugate 是可数名词,单数形式在句中作主语时需要限定词,特指某个产物时用定冠词 the;汉语名词没有冠词,学习者容易漏掉。
centrifuge 指分离用的机器或分离动作;centrifugate 是离心后得到的较稠产物(名词)。说“把样品离心”用动词 centrifuge,说“收集离心产物”才用 centrifugate。
supernatant 专指离心或沉淀后位于上层的液体;centrifugate 指分离后得到的较稠产物(如下层沉淀)。两者在同一离心场景中相对,不能互换。
precipitate 指溶液中因化学反应或析出形成的固体沉淀;centrifugate 特指通过离心分离得到的较稠产物。前者强调形成原因,后者强调分离手段。
centri-(中心)+ -fuge(驱赶)
centrifug-(离心)+ -ation(名词后缀)
centri-(中心)+ -fug-(逃离)+ -al(形容词后缀)
centrifuge(离心机)+ tube(管)
ultra-(超)+ centrifuge(离心机)
centrifugal(离心的)+ force(力)
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