6 sentences

1. 这种酸的浓度很高。

   zhè zhǒng suān de nóng​dù hěn gāo.

   The concentration of this acid is very high.

   Source: Dong Chinese Dictionary

2. 免疫抑制剂的浓度太高了。

   miǎn​yì yì​zhì​jì de nóng​dù tài gāo le.

   The immunosuppressant levels are too high.

   Source: OpenSubtitles

3. 这种酒精的浓度是百分之七十五。

   zhè zhǒng jiǔ​jīng de nóng​dù shì bǎi​fēn​zhī​qī​shí​wǔ.

   The concentration of this alcohol is 75%.

   Source: Dong Chinese Dictionary

4. 这种消毒液浓度很高，使用前需要按比例配好。

   zhè zhǒng xiāo​dú yè nóng​dù hěn gāo, shǐ​yòng qián xū​yào àn bǐ​lì pèi hǎo.

   This disinfectant is highly concentrated and needs to be mixed in proportion before use.

   Source: Dong Chinese Dictionary

5. 实验室里这瓶乙醇的浓度很高，使用时要注意防火。

   shí​yàn​shì lǐ zhè píng yǐ chún de nóng​dù hěn gāo, shǐ​yòng shí yào zhù​yì fáng​huǒ.

   The ethanol in this bottle in the lab is highly concentrated, so be sure to take fire precautions when using it.

   Source: Dong Chinese Dictionary

6. 在P型半导体中，受体杂质的浓度决定了空穴的数量。

   zàiP xíng bàn​dǎo​tǐ zhōng, shòu​tǐ zá​zhì de nóng​dù jué​dìng le kòng​xué de shù​liàng.

   In P-type semiconductors, the concentration of acceptor impurities determines the number of holes.

   Source: Dong Chinese Dictionary