6 sentences

1. 这种矿泉水里含有微量的钠。

   zhè zhǒng kuàng​quán​shuǐ lǐ hán​yǒu wēi​liàng de nà.

   This mineral water contains trace amounts of sodium.

   Source: Dong Chinese Dictionary

2. 硒是一种人体必需的微量元素。

   xī shì yī zhǒng rén​tǐ bì​xū de wēi​liàng yuán​sù.

   Selenium is an essential trace element for the human body.

   Source: Dong Chinese Dictionary

3. 这种特殊的矿石中提取出了微量的铀。

   zhè zhǒng tè​shū de kuàng​shí zhōng tí​qǔ chū le wēi​liàng de yóu.

   Trace amounts of uranium were extracted from this special ore.

   Source: Dong Chinese Dictionary

4. 科学家在样本中发现了微量的放射性物质。

   kē​xué​jiā zài yàng​běn zhōng fā​xiàn le wēi​liàng de fàng​shè​xìng wù​zhì.

   Scientists discovered trace amounts of radioactive material in the samples.

   Source: Dong Chinese Dictionary

5. 这种传感器能够检测到空气中极微量的有害气体。

   zhè zhǒng chuán​gǎn​qì néng​gòu jiǎn​cè dào kōng​qì zhōng jí wēi​liàng de yǒu​hài qì​tǐ.

   This sensor can detect trace amounts of harmful gases in the air.

   Source: Dong Chinese Dictionary

6. 这种新型传感器非常灵敏，能检测到空气中极其微量的甲烷。

   zhè zhǒng xīn​xíng chuán​gǎn​qì fēi​cháng líng​mǐn, néng jiǎn​cè dào kōng​qì zhōng jí​qí wēi​liàng de jiǎ​wán.

   This new sensor is highly sensitive and can detect trace amounts of methane in the air.

   Source: Dong Chinese Dictionary