羟基

The functionality of the polyether polyol is determined by the number of active hydroxyl groups per molecule.

功能聚醚多元醇，是由一些积极的羟基，每个团体分子。

Synthesis of hydroxyl acrylic resin used in acrylic amino paint and choice of amino resin are studied.

研究了丙烯酸氨基漆用羟基丙烯酸树脂的合成、氨基树脂的选择。

Experimental results indicate that hydroxyl radical is a feasible method to treat oceanic biologic contamination.

结果表明羟基是治理海洋有害生物污染行之有效的方法。

This follows by a more gradual formation of ether, hydroxyl and terminal vinyl groups with time and concentration.

此前，随着时间和浓度，逐渐形成更多的醚类、羟基和乙烯基作为终端的产物。

Double hydroxyurea is a synthesis of hydroxylamine hydrochloride Triphosgene and response system.

双羟基脲的合成是用三光气和盐酸羟胺反应制的。

Double hydroxyurea in organic synthesis as a reducing agent efficient use of reagents can be used as the use of hydroxylamine.

双羟基脲在有机合成中作为高效还原剂使用，也可以作为羟胺化试剂使用。

These materials were effective catalysts in the hydroxylation of benzene with H2O2 under room temperature.

所合成材料室温下在苯的过氧化氢直接羟基化反应中表现出良好的催化性能。

The material exhibited a good catalytic activity in the reaction of benzene hydroxylation.

所合成的材料在苯的羟基化反应中表现出良好的催化活性。

XRD, FT-IR, DTA, BET and other methods were used for characterization of phenol hydroxylation catalysts.

采用XRD、FT-IR、DTA、BET等手段对苯酚羟基化催化剂的物理化学性能进行了表征。

The catalysis behavior of Fe-MCM-48 and V-MCM-48 for the hydroxylation of benzene were studied.

并初步研究了Fe-MCM-48和V-MCM-48对苯的羟基化反应的催化活性。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。