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Afterward, vibration equations of bundle conductors system which consider the effects of spacer dampers are derived(including transcendental function and plural), the vibration frequencies and modes of bundle conductors system are got by solving the transcendental eigenvalues of these equations. Then the amplitude ratio of each spacer dampers to sub-conductors are got, so bundle conductors can be exactly solved with the application of energy balance method as single-conductor.

然后,推导出了考虑阻尼间隔棒阻抗影响的分裂导线体系的振动方程组,通过求解超越特征值得到分裂导线的振动频率和模态,得到各间隔棒、各段子导线的振幅比,从而使分裂导线可以象单导线一样应用能量平衡法进行精细求解。

Armillaria luteo-virens is a ectomycorrhizal fungus symbiotic with some species of Kobresia in Tibet Plateau, China. A strain was recently isolated from fruitbody tissue of the fungus. To determine whether the strain is the pure culture of the fungus, the internal transcribed spacer region and the first intergenic spacer region (IGS-1) of the nuclear ribosomal DNA of fruiting body and the isolated strain were sequenced and compared. Further, the 5.8S/ITS and IGS-1 sequences of the species were BLAST matched with GenBank database on homology and a phylogenetic tree was constructed based on 5.8S/ITS sequence and two phylogenetic trees were constructed separately based on two IGS-1 sequences.

首次从采自青藏高原、与高原牧草嵩草属Kobresia草本植物形成外生菌根的黄绿蜜环菌Armillaria luteo-virens子实体中分离获得一组织分离菌株,运用rDNA-ITS和rDNA-IGS-1测序技术对该组织分离菌株是否为黄绿蜜环菌的纯培养菌种进行分子鉴定,并基于黄绿蜜环菌的5.8S/ITS和IGS-1序列进行核酸序列数据库GenBank同源性检索比对、构建系统发育树。

Low genetic variation has probably resulted from the refugial nature of these populations since the last glaciation rather than from recurrent pollen dispersal between Chilanshan and Alishan populations of these 2 Chamaecyparis species. Two Hinfl restriction site differences were found in the trnV-trnM intergenic spacer between C. formosensis and C. taiwanensis. Fragment length difference as well as point mutations in the petG-trnP intergenic spacer between C. formosensis and C. taiwanensis were also found.

如此低的遗传变异可能是因为现今之红桧与台湾扁柏族群为冰河期存在之大族群的残留小族群,而未必是花粉散播所提供之基因交流极为频繁所造成。trnV-trnM基因间区间序列在红桧与台湾扁柏两者间有两个HinfI之酶切点之差异,在PetG-trnP基因间区间序列也发现台湾扁柏与红桧之间有限制酶片段长度及其他点突变。

But only one diquaternary compound whose spacer group was -(CH2)2O(CH2)2-, N,N"-dimethyl-N,N,N",N-tetradodecyl-3-oxa- pentane diammonium diiodide, was obtained under the same reaction conditions, because of the effect of spacer.

但由于间隔链中氧原子的影响,使得用相同方法合成和后处理不同疏水链的间隔链为-(CH2)2O(CH2)2-双子型季铵盐所得结果不一样。

The mechanical characteristics of the foam filled 3-D spacer fabric composites under flatwise compressive , shear and three point s flexural loads were compared with 3-D spacer fabric composites and foamsandwich composites , and the effect s of pile height and foam density on the mechanical properties were investigated.

将三维间隔连体织物泡沫夹层结构平压、剪切和三点弯曲载荷作用下的力学特性与三维间隔连体织物复合材料、传统泡沫夹层结构复合材料进行了对比分析,在此基础上,考察了芯柱高度、泡沫密度对复合材料平压、剪切、三点弯曲性能的影响。

The sequence of rDNA Intergenic Spacer Regionwas determined for the species Oscillatoria sp.. The spacer sequences was 427bp in lengh exclusive of 16S and 23S rDNA coding regions,containing a Ile tRNA gene.

采用末端终止法对蓝藻类颤藻科Oscilatoriasp.rDNA16S-23S基因间隔区进行了序列测定,获得了Oscilatoriasp.rDNA基因间隔区427个核苷酸,其中包含1个异亮氨酸tRNA基因。

The polymerization reactivity of the monomers increases with an increase in the spacer length and only those monomers and polymers with a flexible spacer≥(CH_2)_6 show liquid crystalline with their mesophases being smectic A.

随着柔性间隔基增长,单体的反应活性也相应增加,而且只有当柔性间隔基≥6时聚合物和单体才呈现出近晶A液晶态。

The effects of AlN spacer layer on AlGaN/GaN HEMTs are studied, and the results show that the insertion of AlN spacer layer can improve gate schottky barrier and decrease gate leakage current.

研究了AlN阻挡层对AlGaN/GaN HEMT器件性能的影响,结果表明,AlN阻挡层的增加提高了栅肖特基势垒,增加器件的关断电压,降低了栅泄漏电流。

Objective To evaluate the accuracy of Cercon CAD/CAM system and the influence of different spacer thickness and spacer coverage area on the internal and marginal fit of the copings.

目的 通过研究隙料厚度和覆盖面积对Cercon CAD/CAM底层冠边缘和内部适合性的影响,评价Cercon CAD/CAM系统的加工精度。

A first spacer (32) extends from one of the sidewalls and a second spacer (34) extends from another of the sidewalls.

第一间隔(32)从一个侧壁延伸,而第二间隔(34)从另一个侧壁延伸。

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