A highly active copper catalyst for synthesis of o - (p -) toluidine via vapor-phase catalytic hydrogenation was prepared.

介绍了所制备的高活性铜催化剂用于气相催化加氢还原制备邻(对)甲苯胺的研究。

youdao

The test results showed that the AG-80 modified epoxy resin, which was modified by organic titan and active copper oxide, is of good mechanical property and thermostable;

试验结果表明，经有机钛及活性氧化铜改性的AG-80环氧树脂具有较好的机械性能和耐温性能；

youdao

Copper is one of essential trace elements for human, acting as an active agon of lysyloxidase which is critical enzyme for collagen maturation.

铜是人体必需的微量元素之一，是胎膜中胶原纤维发育成熟的关键酶赖氨酰氧化酶的活性辅基。

youdao

In the case of the most-active copper contract traded on the Comex division of the New York Mercantile Exchange, Tuesday was the first rise in nine trading sessions, although volume was small with electronic activity only as trading floors remained closed due to Hurricane Sandy.

FORBES: Base Metals Slide In Recent Weeks On Demand Worries; Better Days Seen Ahead

The big increase occurred even though copper was making neither multi-year lows nor highs, with the most active May contract remaining within the trading range in place since August.

FORBES: CME Group's Hunnable: Copper-Trading Volume Sharply Higher; Big Rise During Asian Hours