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<mml:mrow> <mml:mi mathvariant="italic">&#916;</mml:mi>
<mml:msub> <mml:mi mathvariant="italic">&#961;</mml:mi>
<mml:mn>2</mml:mn>
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<mml:mo stretchy="true">&#8594;</mml:mo>
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<mml:mo>=</mml:mo>
<mml:mi mathvariant="italic">&#961;</mml:mi>
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<mml:mo stretchy="true">&#8594;</mml:mo>
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<mml:msub> <mml:mi mathvariant="italic">&#961;</mml:mi>
<mml:mi mathvariant="normal">slab</mml:mi>
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<mml:mfenced close=")" open="("> <mml:mrow> <mml:mi mathvariant="normal">Ger</mml:mi>
<mml:mo stretchy="true">/</mml:mo>
<mml:mi mathvariant="normal">Sil</mml:mi>
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</mml:mfenced>
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<mml:msub> <mml:mi mathvariant="italic">&#961;</mml:mi>
<mml:mi mathvariant="normal">slab</mml:mi>
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<mml:mfenced close=")" open="("> <mml:msub> <mml:mi mathvariant="normal">MoS</mml:mi>
<mml:mn>2</mml:mn>
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</mml:mfenced>
</mml:mrow>
</mml:math>