查询词典 phosphate

Nanocrystalline zinc phosphate tetrahydrate was synthesized by solid-state reaction at ambient temperature using Na3PO412H2O and ZnSO47H2O as regents. The enthalpy of reaction and the standard enthalpy of formation of zinc phosphate tetrahydrate were studied by microcalorimeter.

以Na3PO412H2O和ZnSO47H2O为原料，采用室温固相反应制备纳米四水磷酸锌，用微量热法研究该反应的反应焓和四水磷酸锌的标准摩尔生成焓。

Results showed that the activity of soil enzymes was obviously different.Among the different vegetation types,the activity of soil enzymes under Tilia mandshurica forests was the highest except peroxidase,whereas that under shrub-grass was the lowest.The activity of soil urease and alkaline phosphate under shrub was higher than that under the mixed forests.Activity of soil catalase and phosphate under Larix principis-rupprechtii forests was higher than that under Pinus tabulaeformis.

结果表明：不同植被类型的土壤酶活性有显著的区别，其中除过氧化物酶外，糠椴林的土壤酶活性均属最高水平，而灌草丛所有酶活性都属最低水平；灌木丛中脲酶和碱性磷酸酶活性显著高于杂木林；华北落叶松林的磷酸酶和过氧化氢酶活性均高于油松林。

Production technique and product standard of feed defluorinated tricalcium phosphate at home and abroad were introduced, and suggestion on the development and extension of feed defluorinated tricalcium phosphate in China was put forward.

论述了国内外饲料脱氟磷酸三钙的生产技术，发展状况，产品质量指标和国内饲料脱氟磷酸三钙的工业化生产技术，并就我国发展和推广饲料脱氟磷酸三钙产品提出建议。

Result At 5 and 25 mgkg^(-1), the total respiratory rate had a similar trend with tricarboxylic acid cycle and pentose phosphate pathway, T1, and T2 were higher than the control on the 1st day and then declined three days late but they had a recover on the last day. Embden-Meyer-hot-Parnas pathway had a declined trend forever. The respiratory rate of the total and three pathways were decreased under 125 mgkg^(-1). The enzyme activity of pyrophosphate-dependent phosphofructokinase, glucose-6-phosphate dehydrogenase (G-6-PDH) and malate dehydrogenase were similar to relative respiratory pathway.

测定期内，5mgkg^(-1)土、25mgkg^(-1)土浓度处理使基础呼吸速率和三羧酸循环、磷酸戊糖途径的呼吸速率均表现初期上升随后（第3天）下降但末期有所恢复的趋势，而糖酵解途径的呼吸速率则持续下降在末期小幅回升；125mgkg^(-1)土浓度处理后基础呼吸速率及3条途径呼吸速率均呈下降趋势；磷酸果糖激酶、苹果酸脱氢酶和葡萄糖－6-磷酸脱氢酶(G-6-PDH)活性变化趋势分别与其对应途径呼吸速率变化相似。

Methods Tetra-calcium phosphate was prepared by high heating, than imitated the internal situation of humanbody, for hydrolization and solidation,to synthesize the hydroxy-calcium phosphate,as artificial bone in sement-type ,then im-planteted them into the large segmental defect of radius of New Silan rabbits model. The implanted materials were taken out at 4th, 8th, 12th, and 16th weeks after implantation. The histological sections, with HE and Masson's trichromic staining made, to evaluate the effectiveness of repair of bony defect.

方法高温法制备出磷酸四钙，然后在模拟体内环境下将其与无水磷酸氢钙发生水化固化反应，合成水泥型羟基磷灰石人工骨，将自制的CPC人工骨植入新西兰兔桡骨大段骨缺损模型中，术后4、8、12、16周取材，采用HE染色和Masson三色染色分析评价骨缺损修复效果。

Keywords triethyl phosphate;esterification reaction;phosphate oxychloride;synthesis

磷酸三乙酯；酯化反应；三氯氧磷；合成

Cyclic phosphate was synthesized from trimethylolalkane,triethyl phosphate and dimethyl methyl phosphonate,which can be used as environment-friendly durable flame retardant for the padding process of PET fabric.

以亚磷酸三乙酯、三羟甲基丙烷和甲基磷酸二甲酯为原料合成了环状磷酸酯，可作为涤纶织物浸轧用的环保型耐久阻燃剂。

In this paper sodium silicate manganese dioxide absolute ethyl alcohol triethanolamine trimeric sodium phosphate polysodium phosphate sodium hexametahposphatesodium hexametahposphate + ammonia water are chosen to be grinding aid to increase the efficiency of milling.

文章选用 Na2SiO3、 MnO2、无水乙醇、三乙醇胺、三聚磷酸钠、多聚磷酸钠、A+B、红土（含少量稀土元素，产自内蒙古）+三乙醇胺作为助磨剂对钢渣进行粉磨。

Their half lives were 27.29 and 69.16 days respectively. Monocrotophos degraded into both methanol extractable and unextractable residues in the submerged soil.The analysis of 14C-methanol extractable. residue by TLC and ARG indicated that degraded products of monocrotophos were triether phosphate,;N-de-methyl Azodrin, O, O-dimethyl-vinyl-phosphatc,O-demethyl Azodrin,and O, C-demethyl Azodrin.The principal degraded extratable product of monocrotophos was triether phosphate, which incresed from 5% of the parent solution of monocrotophos to a range of 28-83%, furthermore and its degradation process was much faster in the unterilized soil than in the sterilized soil.

久效磷在淹水土壤中降解为甲醇可抽提态和不可抽提态残留物，对甲醇可抽提态残留物经TLC和红外光谱分析表明，其降解物为磷酸三酯、N-去甲基久效磷、O，O-二甲基乙烯基磷酸酯，0-去甲基久效磷，以及O，C-去甲基久效磷，但主要为磷酸三酯，其含量由母液中的5％增加到28—83％，这种降解过程，在未灭菌土壤中比在灭菌土壤中快。

The population distribution of physiological groups of bacteria,including ammonifying bacteria, denitrifying bacteria, nitrobacteria and nitroso bacteria, organic phosphate dissolving bacteria and inorganic phosphate dissolving bacteria in water body and sediment of Suzhou Creek are studied with MPN and flat account method from Jan. 2002 to Mar. 2003. The role of these physiological groups of bacteria in Suzhou Creek aquatic ecosystem is discussed.

用最大可能数法和平板计数法，于2002年1月～2003年3月对苏州河水体和底泥中的主要微生物功能菌群——包括有机磷分解菌、无机磷分解菌、氨化菌、亚硝化菌、硝化菌和反硝化菌等进行了生态调查，并分析探讨了它们在苏州河水生态系统中的作用。

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。