酸性

Propene hydration etherification reaction catalyzed by β zeolite was studied by using in situ FT IR technique, and the effects of surface acidity on the reaction were discussed.

采用原位红外光谱技术，对β沸石催化剂上的丙烯水合醚化反应过程进行了研究，并结合催化剂的表面酸性进行了讨论。

Results showed that 1 soil structure in the rhizosphere was very high; water-holding capacity and organism count in the soil increased with altitude and duration of bamboo growth. However, soil etiolation and soil acidification was obvious. 2 Soil acidity was adjusted with lime; best applications were 10.625 thm^(-2) on the valley bottom, 14.811 thm^(-2) for the middle slope, and 12.558 thm^(-2) on the valley top.

结果显示：毛竹林根系活动层(60 cm)土壤结构较好，土壤水源涵养功能的大小和土壤的有机质质量分数随毛竹林成林时间和海拔高度的增加而增加；但土壤黄化、酸化特征较明显，土壤酸性调节主要以施用石灰为主，其中谷底毛竹林改造需石灰量为10.625 thm^(-2)，坡面的里白毛竹林为14.811 thm^(-2)，岗地毛竹林需石灰量为12.558 thm^(-2)；在氮磷钾3种元素中，氮素供应总体上良好，但要获得高产，氮肥的补充也是必需的。

Its good evenness and acid resistance provides drink with excellent stability.

良好的取代均匀性，保证了酸性饮品的稳定性，使保质时间更长。

Experimental results show that adsorption of γ-BHC in soil s has a close relation to organic matter contents and extractable aluminum, as well as pH of the soil .

试验表明，γ-六六六在土壤中的吸附率与土壤中的有机质含量、可萃取铝含量和酸性等均有密切关系。

Industrial regions of the world suffer much more acidic fall-out than they did before the industrial revolution.

现在，世界上的工业地区比工业革命前遭受到更多酸性沉降物。

The flotation mechanism of MG reverse-floating dolomite was studied by measuring the Zeta-potential of collophanite and dolomite, Infrared Absorptions Spectra analysing the adsorption of MG onto the minerals surface, ultraviolet- visible light absorbing spectrum calculating the amount of MG which was adsorbed onto the minerals surface. These researches showed that MG was more easyly adsorded onto the surface of dolomite in feeble acidic solution because of pure dolomite charges positive as well as pure collophanite charges negative. Therefore, a lot of MG negative ions was adsorded onto dolomite, and that MG negative ions contained hydrophobic group, the hydrophobicity of dolomite was modified, the grains of dolomite were adhered to air bubble and float with them.

对白云石和胶磷矿的Zeta-电位测定、红外光谱分析MG药剂在矿物上面的吸附情况、紫外-可见吸收光谱测定矿物上MG的吸附量等，研究了MG药剂反浮选白云石的浮选作用机理，表明在弱酸性条件下，由于白云石表面荷正电而胶磷矿表面荷负电，带有羧基和羟基官能团的MG药剂更容易吸附在白云石上，使其周围吸附有大量的MG负离子，而MG负离子的另一端为烃基，这就改变了白云石的疏水性，使其矿粒容易附着于气泡上浮。

A cement resembling putty; made by mixing ferric oxide and boiled linseed oil; is acid resistant.

一种类似油灰的胶泥，由氧化铁和煮沸的亚麻油混合而成，具有抗酸性。

The zinc acetate, the potassium ferrocyanide and the potassium binoxalate are used as the sample preparation reagent of calcium tablets, and the hydrogen peroxide in samples can be extracted in weak-acid medium and 60℃ water bath.

采用乙酸锌、亚铁氰化钾和草酸氢钾作为前处理试剂，在弱酸性介质和60℃条件下提取过氧化氢。

The low-P tolerance genetics of a set of 'Hexi41×Dabaidao' and RILs planted respectively in low phosphorous ferruginous acid red soil and high phosphorous soil were studied to investigate the expression of low phosphorus tolerance characteristics of hybrids under low-P stress, which provided the theory basis for the orderly improvement of rice germplasms with phosphorus efficiency.

以严重缺乏有效磷的酸性红壤开展合系41×大白稻强耐低磷杂种后代及重组近交系的遗传特性研究，以期明确低磷胁迫下杂种后代的耐低磷特性的表达，为磷高效水稻种质资源的定向改良提供理论依据。

Antibody of mouse against rat of glial fibrilla acidic protein used to labeling astrocytes of the brain and antibody of rabbit against rat of c-fos labeling c-fos protein in the brain. The second fluorescence antibodies were FITC and Cy3, respectively. Observations of the results and quantitative analysis were conducted with LSCM.

在本实验中，我们应用免疫组织化学的双标方法，用小鼠抗大鼠胶质原纤维酸性蛋白标记大鼠脑内的星形胶质细胞，用兔抗大鼠c-fos标记大鼠脑内的c-fos蛋白，分别应用FITC和Cy3标记的荧光二抗来显示，最后用激光扫描共聚焦显微镜进行观察并定量分析。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。