The structure, electrochemical performance and the mechanism of formation of positive active material of tetrabasic lead sulfate ( 4BS) were elaborated.

1、

Study on SBS Tetrabasic Grafted Adhesives for Polyolefine

聚烯烃用SBS四元接枝改性粘合剂的研究

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2、

Study on synthesis and the grafting rate of tetrabasic graft copolymer of CR/ VAC/ MMA/ AA

CR/VAC/MMA/AA四元接枝共聚物合成及接枝率的研究

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3、

Synthesis of tetrabasic graft copolymer of chloroprene rubber/ styrene/ methyl methacrylate/ acrylic acid

氯丁橡胶/苯乙烯/甲基丙烯酸甲酯/丙烯酸接枝共聚物的合成

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4、

Development of CR. SBS/ MMA. AA Tetrabasic Grafted Adhesive

CR.SBS/MMA.AA四元接枝胶粘剂的研制

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5、

Three different structure morphology based on tetrabasic acrylic copolymers

四元共聚物不同形态结构分析

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6、

Dynamical Lie Algebra Method for Highly Excited Vibrational State of Quasi-linear Tetraatomic Molecules

准线型四原子分子高激发振动能级的动力学李代数方法

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7、

At present, time-dependent ( TD) quantum wave packet approach has emerged as a powerful computational tool for studying quantum reaction dynamics of triatomic and tetraatomic systems.

目前含时波包量子动力学方法已经成为人们研究三原子和四原子体系强有力的计算工具。

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8、

Comparing with conventional method of violet spectrum, the method of potentiometric titration of lead tetraacetate has many advantages such as stable potentiometric value, exact and credible results, clear potentiometric abrupt change in stoichiometric point and simple operation.

与传统的紫外光谱法相比，应用四乙酸铅电位滴定法测定汽油中硫醚硫的含量，具有化学计量点处电位突跃明显、电位值稳定、操作简单、结果准确可靠的特点。

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9、

The riboflavin tetraacetate was synthesized starting from riboflavin and acetic anhydride, and the solid superacid ZrO_2-SO_4~ ( 2-) as catalyst.

对固体超强酸ZrO2－SO4~（2－）催化合成核黄素四乙酸酯进行了研究。

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10、

β-Pinene could be oxidated by potassium permanganate, epoxidation, lead tetraacetate, ozone, sensitized photooxidation and selenium dioxide.

目前研究的氧化方法有高锰酸钾氧化、环氧化、四醋酸铅氧化、臭氧氧化、光敏氧化和二氧化硒氧化等。

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11、

Disodium ethylenediamine tetraacetate is a good sequesterant.

乙二胺四乙酸二钠是一种优秀的络合剂。

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12、

Synthesis of Benzylidene-β-D-glucosamine Tetraacetate

苯甲醛缩-β-D-氨基葡萄糖四乙酸酯的合成

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13、

Salidroside was synthesized by first preparing the intermediate, salidroside tetraacetate ( using tyrosol as starting material), and then deacetylizing it.

红景天甙以酪醇为原料，经制得中间体四乙酰基红景天甙后，再脱乙酰基合成而得。

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14、

Study on the two methods for determination of Sodium Iron(ⅲ) Ethylenediamine tetraacetate in Iron Fortified Salt

两种铁强化食盐中乙二胺四乙酸铁钠的检测方法研究

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15、

A study of oxidation of β-pinene with lead tetraacetate

β-蒎烯四醋酸铅氧化反应的研究

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16、

The Application of Lead Tetraacetate in Indirect Organic Electrochemical Synthesis

四醋酸铅在间接有机电合成中的应用

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17、

This paper presents a single-locus tetra-allelic binary Genetic Algorithm based on the concept of dominant and recessive genes, which is named Full Dominance-Recessive Diploid GA.

基于生物进化遗传理论中有显性、隐性遗传因子的理念，本文提出了一种采用单点四进制编码的遗传算法，即完全显隐性二倍体遗传算法。

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18、

RP-HPLC determination of related substances of tetra-acetylated puerarin

RP-HPLC检测四乙酰基葛根素原料药中的有关物质

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19、

Synthesis and anti-inflammatory activities of aryl alkyl acid NSAIDs tetra-acetylated glucoside derivatives

芳基烷酸类NSAIDs四乙酰基葡萄糖衍生物的制备及抗炎活性

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20、

OBJECTIVE Study effect of tetra-acetylated puerarin on isolated rats thoracic aortic rings and it's mechanisms.

目的：研究红景天苷对胸主动脉环的舒张作用并探讨其可能的机制。

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