The synthetic conditions of 2-pentylidene cyclopentenone using PTC were stud-ied, and the conditions of isomerization were also studied.

对相转移催化合成2-戊叉环戊酮及其异构化的条件进行了研究。

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Renewable Energy Production Tax Credit (PTC).

可再生能源产品税收抵免(PTC)。

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PTC, an engineering services company, acquired the rights to MathCAD in 2006.

PTC是一家工程设施公司，于2006年收购了MathCAD的股权。

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The number three player, PTC (formerly Parametric Technology), has faltered badly in recent years.

FORBES: International

Nonsense mutations also cause 10% of cystic fibrosis cases, and the PTC drug shows promise there.

FORBES: Magazine Article

The PTC itself gives the show a red light meaning it is unsuitable for children.

FORBES: The Parents Television Council Shakes Its Angry Fist at 'Glee'