提出了比较精确的计及极限环基阶谐波与三阶谐波的分析计算方法。
This paper presented an analytical method with more accuracy than before considering the fundamental arid the third harmonic in limit cycle.
本文介绍了用重氮转移法合成具有较大空间位阻的重氮乙酸二环己基甲酯、L- 薄荷酯和叔丁酯。
Synthesis of sterically hindered dicyclohexylmethyl, L menthyl and tert butyl diazoacetate by diazo transfer was described on this paper.
烷基自由基对羰基进行进攻，生成双环的羰自由基中间体。
This radical attacks the carbonyl group to an intermediate bicyclic ketyl.
它比山达基教漂亮的小型电子测量仪强那么一点也是一个用来拾取四周环境中的噪声信号然后让指针跟着摆动的小玩意。
It's little more than a fancy small-scale version of a Scientology e-meter, a gadget that picks up on noise in the environment and makes a needle on a dial wiggle.
越来越多的科学研究证明番茄红素可以中和破环细胞和激发癌症的有害自由基。
There is growing scientific evidence that lycopene neutralizes harmful free radicals that can damage cells and trigger cancer.
涉事船上载有28名中国游客和3名船员，28日在从沙巴州首府哥打基纳巴卢前往附近景点环滩岛途中在附近海域失联。
Someone's boat carrying 28 China tourists and 3 crew members, 28 in Kota Kinabalu from Saudi Bazhou capital brother to nearby attractions ring Beach Island way in nearby waters lost.
弹性环氧改性不饱和聚酯腻子可采用添加乙烯基树脂以及添加柔性环氧酯树脂等方法改进不饱和聚酯的弹性。
Elastic epoxy modified unsaturated polyester putty can be used to add vinyl resin and adding flexible epoxy ester resin and improvement method of unsaturated polyester elastic.
通过加氢处理、改进添加剂配方及废油再生可以减少矿物油基淬火油对环镜的危害。
The harm of mineral oil based quenching oil to environment can be weakened through hydrogenation, improvement on addition component, and regeneration of wasted oil.
在配电变结构耗散网络中引入顶点负荷、负荷、点状态、形、基、散网络、环变结构网络等新概念。
New concepts of top point load, arc load, top point state, net shape, net base, dissipated net andopencircuitvariable structure net are introduced into distribution net.
胞嘧啶：嘧啶族的有机化合物。常被称为基，包含一个单环，内有氮原子和碳原子，还有氨群。
Cytosine organic compound of the pyrimidine family often called a base consisting of a single ring containing both nitrogen and carbon atoms and an amino group.
设计围绕“山水江城”进行，以山为基、水为心、江为环、城为魂。
The design plays around 'water, mountain and city' - mountain as the foundation, water as the heart, river as the loop and city as the soul.
通过树脂基复合材料爆炸自由膨胀环实验的分析，对实验技术中存在的问题提出了一些建议。
Some proposals for problems involved in experimental technique were put forward through resin matrix composite freely expanding ring experimental technique analysis.
本文研究了不同热处理时效温度和时效时间对一种活塞环用钴基高温合金的抗拉强度、延伸率、硬度及组织的影响。
The effect of aging treatment on the tensile strength, elongation, hardness and microstructure of a cobalt base superalloy used for pistons rings was investigated in this paper.
但若萘环上有取代基，将大大降低其生物活性。
However, any substitution on the naphthyl ring decreased the bioactivity.
引发体系中的微量水分是影响环氧乙烷环氧丙烷无规聚醚起始端基结构，并进一步影响其分子量和使用性能的重要因素。
Trace water in the initiator system is an important factor which affects the initiating terminal group structure and the performance of the random copolymer of ethylene oxide and propylene oxide.
研究了W2 - 3酚醛环氧乙烯基酯树脂在精细化工生产的许多环节中的防腐蚀应用，对实际工程应用提出了一些建议。
The anticorrosion applications of W2-3 Vinyl Ester Resin in many units of fine chemical industry have been studied and given some Suggestions for practical works in this paper.
对所有共振谱线进行了全面归属，并讨论了不同取代基和环内不同杂原子对化学位移值的影响。
All of the resonance lines were fully assigned and the effects of substituents and heteroatoms in ring on chemical shifts were discussed.
油基环空保护液是非腐蚀性的，但单位成本高、环境污染严重，不能广泛应用。
Oil base annulus protection fluid is not corrosive, however, its high cost and environment pollution restricts its universal use.
重点介绍了金属茂的合成方法及环戊二烯环上的取代基、溶剂对合成及分离旋光性金属茂的影响。
The synthesis of metallocene, the effects of substitution in cyclopentadiene ring, reaction medium for synthesis and separation of chiral metallocene have been highlighted.
而自由基扩环反应是合成中环乃至大环有机化合物的一种有效的新方法，已成为当今有机合成化学的前沿研究领域之一。
Radical ring expansion is a new strategy to synthesize the medium-sized and even large rings, nowadays, it is one of the important research fields of organic chemistry.
本文给出了粘弹性基支粘弹性圆（环）形薄板准静态弯曲的一般解法。
In this paper, a general solution for quasistatic bending of viscoelastic circular (ring) thin plate rested, on viscoelastic foundation is given.
测定了一批具有大小不同碳环的苯磺酰基环烷烃甲酸酯对发光菌的毒性数据。
Batch data for the toxicity of phenylsulfonyl-cycloalkane carboxylates containing different sizes of carboatomic rings to photoluminescence bacteria have been measured.
医药中间体种类：氰酸钠、氰酸钾、热处置基盐、盐酸异丙嗪主环、盐酸异丙嗪侧链。
Pharmaceutical Intermediates species: Sodium Cyanate, Potassium Cyanate, Subsalt of Heat Treatment, the Main Ring of Promethazine Hydrochloride, Promethazine Hydrochloride Side Chain.
较为详细论述了影响环氧乙烯基酯树脂在酸、碱、盐溶液中稳定性的各种结构因素。
All kinds of structure factors causing the stability of epoxy vinyl ester resin in acid, alkali or salt solutions were particularly discussed in this paper.
对环氧乙烯基酯树脂的分类、合成和固化作了叙述，并与普通不饱和聚酯固化过程进行了比较。
In this lecture, classification, synthesis and curing of epoxy vinyl ester were related and the curing behavior of this resin was compared with that of common unsaturated polyester resin.
从龙脑烯醛合成了檀香香料龙脑烯基甲基环己醇，并对其结构进行了分析鉴定。
From campholenic aldehyde , the sandalwood fragrance campholenyl methyl cyclohexanol was prepared, its structure is analyzed and identified.
研究表明配位键的强度不仅受取代基R的影响，而且还与环结构的变化有关。
The strength of the dative bond deponds not only on the substituents R, but also on the skeletal structure of the parent ring.
合成了标准型的环氧乙烯基酯树脂，对其性能进行了表征。
Synthesis and properties of Bisphenol-A standard epoxy vinyl ester resin were discussed in this paper.
合成了标准型的环氧乙烯基酯树脂，对其性能进行了表征。
Synthesis and properties of Bisphenol-A standard epoxy vinyl ester resin were discussed in this paper.
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