刚性的

Totally 17 new type of fulvene ligands have been synthesized by the reaction of substituted-benzoyl chloride with Cp and substituted Cp anions. All the new compounds are fully characterized by infrared spectroscopy,!

我们利用含芳香取代基的环戊二烯丛负离子与含-CN、-I、-CO_2CH_3等配位有机基团的芳酰氯反应成功地合成了17个既含芳香基团又含杂原子配位基团的刚性共轭富烯类配体。

It is worthy pointing out that there are two types of Ag-C bonding models found in 19 including /7\'-C6H6-Ag and /72-Cp-Ag.Three new H-bonded one-dimensional supramolecular compounds, namely M(C3oH2iN2O2)2(C2H5OH)2 M - Cu(II (20), Co (21) and Mn (22), were also synthesized by the reactions of metal (Cu2+, Co2+, Mn2+) acetate with this new type of fulvene ligand.

用所合成刚性多齿有机配体与过渡金属Cu~(2+)(来源：AB4dC论文网www.abclunwen.com)、Co~(2+)、Mn~(2+)的醋酸盐反应，分别合成了含七员金属环的配合物(20—22)，在固态下，20—22为分子间氢键驱动的一维链状超分子聚集体。

The properties of surface chemistry and micellar aggregation number of a special anionic surfactant with two hydrophilic head groups linked by a rigid structure- disodium hexadecyl diphenyl ether disulfonate (C16-MADS) was determined respectively.

测定了由刚性基团联接的特殊双亲水基型阴离子表面活性剂——十六烷基二苯醚二磺酸钠(C16- MADS)的表面化学性能及胶束聚集数，并考察了表面活性剂浓度和体系温度对Nm的影响。

The heat release calculation by external condensation of horizontal multitube, vibration check while media transversely flow over tube bundle, ensemble rigidity pipe bundle and connecting technology of tube and tube plate ware presented in this paper.

介绍了大型加热器的水平式多管排管外冷凝放热计算、介质横向流经管束时的振动校核、整体刚性管束以及管子与管板的连接工艺。

Poly(ethylene-2,6,-naphthalate) is a newly developed polyester. The chemical structure of PEN can be described by replacing the benzene ring in poly with the stiffer naphthalene ring.

聚萘二甲酸乙二酯是一种近年来获得较大发展的高性能聚酯材料，其分子结构与聚对苯二甲酸乙二酯相类似，可看作是由PET链中苯环由刚性更大的萘环所替代的产物。

PEEK is a kind of thermoplastic resins which has a lot of excellent properties in many fields and can be reinforced by many types of fillers. When it is reinforced by carbon fibers, its strength and wear resistance are improved. Though PEEK/Cf composite has many advantages, its applications are limited just for it is nonconductive.

PEEK是一种结晶性、不透明、浅茶灰色的芳香族系超耐热热塑性树脂，具有坚韧、高刚性和耐蠕变性好等特点，采用碳纤维复合增强，形成了性能更优越的PEEK/Cf复合材料，提高了PEEK的强度和耐磨性，改善加工性。

With the"phototactic effect"ofthe advanced technology wars hard to be eliminated in a short time and presenting the ten-dency to develop long,the effective way to settle the contradiction between the great cost ofthe advanced technology wars and rigid restriction of resource supply is only to raise the effi-cacy of the advanced technology wars.

高技术战争&趋光效应&在短期内难以消除，且有长期发展趋势的情况下，化解高技术战争高耗费与刚性资源供给约束之间矛盾的有效途径只能是提高高技术战争的效能。

Macrocycle with two pyridyl unitsZ-protected groups in the di-ester formed from esterification of Z-Glycine with 2,6-bishydroxymethyl pyridine was removed and thenconverted into Ts-protected group.

本论文以天然氨基酸为手性源，以芳杂环为大环分子的刚性因素，研究它们的环合反应和分子结构，为此设计了下列三种结构类型的大环分子：一。

The banjo-type axle housing 10 comprises an enlarged central, or banjo, portion 12 defining a hollow interior adapted for housing a differential assembly therein, and a pair of sleeve-like axle beam portions 14R and 14L outwardly laterally extending from opposite sides of the center portion 12 for housing axle shafts. The central portion 12 has a front carrier opening 16 formed therethrough on its forwardly facing side, and a rear opening 18 formed therethrough on its rearwardly facing side.

桥壳banjo-type组成的中央，放大10分12个定义斑鸠，或是一个空洞的室内适合住房差动总成，和一双sleeve-like轴部分梁横向延伸14L 14R外，从两端的中心部分12住房刚性车轴。12有一个中央部分开放前载体上16形成籍由氧化还原，使得面对18形成一个开放其rearwardly面对籍由氧化还原。

Manufactured with imported monoblock tungsten steel, double-edged design and precise grinding technology, it holds such features as no chip adhibited at bottom, lucent and clarified at both sides, permanent rustless of cutter body and long life etc under processing.

特点：本刀具旨在提高产品加工质量和效率，它采用整体进口钨钢制造，双刃设计，精密的刃磨工艺，在加工字体中有底部不留屑，两边光洁透亮，刀体永不生锈，使用寿命长等特点，而且它的刚性上焊接刀具的5倍，这样大大可以加工雕刻速度，再有它可以重复修磨使用，一把刀具至少可以使用一年以上。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。