查询词典 alkali grass

Concrete aggregate contains active aggregate like opal which can react with alkali in concrete and generate new material and hazardous gas expansion to cause damages to concrete like knurl and crack.

混凝土骨料中含有活性骨料，如蛋白石等，能与水泥中的碱反应，生成新的物质，产生有害的体积膨胀，造成混凝土隆起、开裂，引起混凝土破坏。

An indirect spectrophotometric method was used to determine the content of lactide. The factors on the determination, such as the type of solvent, acid and alkali dosage, the time of aminolysis reaction and so on, were discussed.

采用间接光度法测定粗丙交酯中丙交酯的含量，讨论了溶剂类型、胺解反应时间、酸碱用量等因素对测定结果的影响。

The hydrogenation of alkali metals using lanthanide trichloride and naphthalene as catalyst has been studied.

本文研究了稀土氯化物对碱金属氢化反应的催化作用。

At the same time, the importance of donor atoms pertaining to the side chain in the complexation reaction of three lariat azacrown ethers with alkali metal ions has been analyzed through the Fukui function.

同时，利用福井函数，对侧臂在氮基臂式冠醚与碱金属配位过程中的重要性进行了分析，结果表明氮基臂式冠醚的侧臂上供电子原子对整个冠醚分子与金属配位过程中有着十分重要的作用。

The coordination effect between lariat crown ether and lariat azacrown ether with alkali metal ions has been analyzed and compared according to the obtained parameters.

运用得到的量子化学计算参数，如前线轨道HOMO能级，LUMO能级等，对碳基臂式冠醚与氮基臂式冠醚与碱金属离子的配位能力进行了比较和分析，结果表明氮基臂式冠醚分子B对碱金属的配位能力要大于碳基臂式冠醚分子A。

Chemical oxidations of sodium plumbite solution in alkali are readily achieved with chlorine, bromine, and hydrogen peroxide and simple lead salts may be oxidized with 37 M nitric acid.

用氯、溴和过氧化氢在碱性条件下可实现化学氧化铅酸钠。简单的二价铅的盐可用37M的硝酸溶液来氧化

With alkali-voron-silicon as the basis and addition of alkaline earth composite fluxing agent,a kind of leadless fluxing agent is developed.

以碱-硼-硅系统为基础，加入碱土金属氧化物复合助熔剂，研制无铅釉上彩熔剂。

The performances of leadless and cadmiumless fluxing agents for overglaze colors were studied based on alkali-boron-silicon fluxing agent system.

用正交实验法研究了在碱-硼-硅系统基础熔剂中，外加助熔助色成分MgO、CaO、SrO、BaO四种碱土金属氧化物的添加量及R2O：RO、SrO：CaO、RO：SiO2对无铅无镉釉上彩熔剂性能的影响规律。

In the alkali-boron-silicon fluxing agents,stabilizers were added and a research was made about the performances of leadless and cadmiumless fluxing agents for overglaze colors.

在碱-硼-硅系统基础熔剂中引入稳定剂，运用正交实验方法对无铅无镉釉上彩熔剂性能进行研究。

The material in use will neither stimulate skin nor harm people抯 health. It could prevent the growth of leaf mold, avoid bite by pest or mouse. It is both acid and alkali resistant. It is an ideal heat insulation material for pipeline protection.

该材料在使用中不会刺激皮肤，也不会危害健康，能防止霉菌生长，避免害虫或老鼠咬啮，耐酸抗碱，是保护管道的理想绝热材料。

Methods Clinical data of 3 cases of bile duct injury during laparoscopic cholecystectomy were analyzed retrospectively.

回顾总结3例LC术中胆管损伤的临床资料，分析3例胆管损伤的原因及对策。

These techniques are applied to the gobang.

本文将这些技术用于五子棋中。