The hyphenation system was carefully designed and the operation (conditions) such as injector temperature, carrier gas flow rate, make-up gas flow rate and argon flow rate were optimized in detail.

对气相色谱和原子荧光的在线联用进行了设计，优化了进样口温度、载气流速、尾吹气流量及氩气流量等实验条件。

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youdao

You can make your flights carbon neutral by planting trees to make up for the greenhouse gas emissions.

你可以通过种树抵消温室气体排放，这样你的飞行就可以做到碳中和。

《柯林斯英汉双解大词典》

Its immense shale-gas potential might make it even less willing to pay up, inclining it to depend less on pipeline gas and to take the risk that it can smooth out ebbs and flows through spot markets.

ECONOMIST: Shale gas should make the world a cleaner, safer place

Oil and gas still make up two-thirds of Russia's exports.

ECONOMIST: Russia's presidency

He says he wants the private sector to make up 70% of non-oil-and-gas GDP by 2020.

ECONOMIST: Turkmenistan's plight