多酸的

In the third part of this paper, a facile method is presented for synthesis of malonaldehyde dianil from propargyl alcohol by oxidizing using chromium trioxide and addition reaction with aniline.

对肼基苯磺酸是由对氨基苯磺酸经亚硝酸钠重氮化得到的重氮盐用亚硫酸氢钠还原、水解、硫酸酸化制得，本文经多次实验确定了反应原料、用量及反应条件，得到的产品纯度好，产率高。

A series of segmented thermally stimulated shape-memory polyurethanes, which consist of polyethylene adipate glycolas the soft segment and 4,4'-diphenylmethane diisocyanate-1,4-butanediol-DPA(which consists of ring components) as the hard segment were synthesized by one-step polymerization.

以聚己二酸乙二醇酯二醇为软段、4，4' -二苯基甲烷二异氰酸酯 1，4 丁二醇含环状结构的扩链剂DPA为硬段，采用一步聚合法制备了一种具有热致形状记忆功能的多嵌段聚氨酯弹性体。

In this work, trially1 isocyanurate and trimethylolpropane trimethaerylate were used as a polyfunetional monomer of PP/PE blends, and the effects of radiation dosage, the kind and amount of polyfunetional monomer on the morphology and mechanical properties were studied.

本研究中采用三烯丙基异腈脲酸酯和三羟甲基丙烷三甲基丙烯酸酯为PP/PE共混体系的多官能团单体。研究了辐照剂量，多官能团单体种类和多官能团单体用量对共混物形态结构及力学性能的影响。

The results indicate that the size and morphology of as-prepared molybdic acid aggregates and annealed products-α-MoO3 powder were affected by the concentration of ammonium molybdate, HAc and CTAB.

结果表明，钼酸铵的浓度、醋酸和CTAB对多钼酸聚集体及其烧结后形成MoO3粉体的形貌和尺寸有影响。

Physalis pubescens: yellow globular berries, the outside layer of dry skin, like packaging, the internal multi-containing fruit juice and seeds, sweet and tastes slightly acidic.

毛酸浆：黄色的球状浆果，外面一层干枯的皮，犹如外包装，果子内部多含汁液和种子，吃起来微酸带甜。

The alkali lignin-based rigid polyurethane foam was prepared with alkali lignin extracted from black liquor as raw materials to replace 10%~25% amount of polyether polyols and polymethylene polyphenyl isocyanate.

以造纸黑液中提取的碱木质素为原料，代替10~25的聚醚多元醇与多亚甲基多苯基多异氰酸酯合成了碱木质素基硬质聚氨酯泡沫。

Recent years many foreign researches show citrulline has a lot of important physiological functions such as radical-scavenging hydroxyl,indicator of the foreign exclusive effect,vasodilatation,stabilizing blood pressure, diagnosing rheumatoidal arthritis,antioxidation and so on.

近年来国外的众多研究表明，瓜氨酸具有很多重要的生理功能，如清除自由基、异体排斥效应指示剂、血管舒张作用、稳定血压以及诊断类风湿关节炎、抗氧化等，瓜氨酸正越来越多地被运用到食品、化妆品和药物上。

Flame—retardant resin was prepared by the condensation and polymerization of phosphoric acid, trihydroxy methyl propane and epoxy chloropropane,the resin was then reacted with hexane diacid and diglycol under certain condition ,resulting in polyol containing 1.5% P and 17— 18% polyester polyol, which was foamed with polyisocyanate, water and catalyst by one— step method, producing fire...

通过磷酸、三羟甲基丙烷和环氧氯丙烷的缩合和聚合反应制得阻燃树脂，然后将它与己二酸、一缩二乙二醇在一定条件下反应制得含P1.5%和含Cl17～18%的聚酯多元醇，再将它与多异氰酸酯、水、催化剂等组分采用一步法发泡工艺制得阻燃聚氨酯软泡塑料。

Flame— retardant resin was prepared by the condensation and polymerization of phosphoric acid, trihydroxy methyl propane and epoxy chloropropane,the resin was then reacted with hexane diacid and diglycol under certain condition ,resulting in polyol containing 1.5% P and 17— 18% polyester polyol, which was foamed with polyisocyanate, water and catalyst by one— step method, producing fire—resistant PU soft foam.

通过磷酸、三羟甲基丙烷和环氧氯丙烷的缩合和聚合反应制得阻燃树脂，然后将它与己二酸、一缩二乙二醇在一定条件下反应制得含P1.5%和含Cl17～18%的聚酯多元醇，再将它与多异氰酸酯、水、催化剂等组分采用一步法发泡工艺制得阻燃聚氨酯软泡塑料。

Using antacids for acid reflux or heartburn will create more acid imbalance in your body.

使用制酸剂对胃酸倒流或灼热将创造更多的酸不平衡你的身体。

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。