The only time I see the boys is at mealtimes.

At Mike and Debbie Wyche's place, preparations for mealtimes involve more than setting the table.

在麦克和黛比威奇的住处, 开饭之前的准备工作可不只是摆餐具.

At mealtimes he would watch her eat.

用餐时，他会看着她吃饭。

It was theoretically predicted that polyvalent anions of C 36 CH 2 had high stability and aromaticity.

从理论上预计C36CH2的高价阴离子具有很高的芳香性和稳定性.

Influenza may be prevented by active immunization with a polyvalent killed or subunit vaccine.

可以通过主动免疫接种多价灭活疫苗或亚单位疫苗预防流感.

Polyvinyl acetate emulsion was synthesized by semi-continuous emulsion polymerization method.

采用半连续乳液聚合的方法合成聚醋酸乙烯乳液.

Polyvinyl alcohol is an addition polymer formed from hydroxyethene or vinyl alcohol.

聚乙烯醇是由乙烯醇加成聚合后形成的.

Polyvinyl Chloride . Synthetic resin used in both liquid and thermoplastic powder systems.

聚氯乙烯,用于液体或粉末涂料的一种合成树脂.

The paper studied the preparation of modified urea-formaldehyde resin adhesive with polyvinyl alcohol ( PVA ) and melamine.

研究了聚乙烯 醇和 三聚氰胺改性脲醛树脂胶粘剂的制备工艺和配方.

Polyvinyl chloride ( PVC ) is a heat-sensitive polymer resin, with degradation during molding.

聚氯乙烯 树脂是一种热敏性树脂, 在加工过程中容易受热分解.

Polyvinyl chloride-polyethylene polyamine resin is a new polymer phase transfer catalyst.

它是一种新型的高分子相转移催化剂.

The results show that sulfonated-polyvinyl chloride has good catalytic activity and reusability.

结果表明,此催化剂有良好催化活性和使用性.

Ths paper reviews the property, some methods about synthesis and use of polyvinyl pyrrolidone.

综述了聚乙烯吡咯烷酮的性质, 合成方法及其应用.

The polyvinylidene fluoride ( PVDF ) resin shows very low critical surface tension, and unique dispersibility.

聚偏氟乙烯 ( PVDF ) 树脂的临界表面张力很低, 其分散性有独特性.

The coated polyvinylidene chloride ( PVDC ) can improve the properties of paper packing.

用 PVDC 涂布纸质包装材料,可以显著提高纸质包装材料的性质.

At first, acrylate polymers used for modifying POM was prepared via emulsion polymerization i.

本文首先采用乳液聚合方法制备了一种用于聚甲醛改性的丙烯酸酯聚合物.

Using the-coordinate POM model core position and flux on Kuroshio frontal meander are studied.

本文运用简化的坐标POM模式研究了东海黑潮锋面弯曲的产生与成长机制.

MgO also showed the nucleation effect on POM, which improved the mechanical properties of POM.

同时,在研究中发现氧化镁对POM有结晶成核作用, 可有效提高POM的力学性能.

A detail of the improvement and development of the polymerization technology of co-POM is also introduced.

对共聚甲醛聚合工业的改进与发展作了详细的说明.

However, the reactivity of POM-5 catalyst increased and catalyst bed decreased, with increasing the reduction temperature.

POM -5 催化剂反应性能随还原温度的提高而提高,且床层温度呈现降低趋势.

The study is to improve the condition for the extraction of anthocyanins from grape pomace.

获得葡萄果皮中花色素苷提取最佳工艺.