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This research shall be obtain that ocean-sand motor shall have more compressive strength early, but later strength shall descend, by means of non-standard sand mixing sample is quite obvious. By means of 50% ocean-sand substitutes for river-sand to mix fine aggregate compressive strength early shall be risen 20%~30%; Adds slag to ocean-sand or a half of river-sand and ocean-sand to make motor test sample, Compressive strength、bending strength and tensile strength shall be according to slag additament, by means of. slag add itament substitutes for cement 40%~60% is most. But slag be able to substitute for cement is too enough, 1ater strength shall be descent.

由本研究可得知海砂拌和的水泥砂浆,其早期抗压强度较高,而晚期强度则有下降的趋势,其中以非标准砂拌和效果最为明显;若以50%海砂替代河砂做为拌和细骨材,其早期抗压强度约上升20%~30%;添加炉石於海砂或河砂、海砂各半的水泥砂浆,其抗压、抗弯及抗拉强度,会随著炉石添加量增加而增加,其中以40%~60%炉石替代量为最佳,但是炉石替代量过高,晚期强度会下降;在相同水灰比状况下以海砂拌和水泥砂浆做比较,以非标准砂拌和有较高的抗压强度,其强度约比标准砂高10%左右。

The late period of loess accumulation with high contents of hornblende and epidote is mainly far-source sedimentary with wind transport, and the early and middle periods of loess accumulation with high contents of magnetite and dens are mainly near-source sedimentary with complex transport.

普通角闪石、绿帘石含量较高的黄土堆积后期是以远源沉积为主,且以风力搬运为主;磁铁矿、岩屑含量较高的早、中期是以近源沉积为主,搬运动力较复杂。

The late period of loess accumulation with high contents of hornblende and epidote is mainly far source sedimentary with wind transport, and the early and middle periods of loess accumulation with high contents of magnetite and deris are mainly near-source sedimentary with comp lex transport.

普通角闪石、绿帘石含量较高的黄土堆积后期是以远源沉积为主,且以风力搬运为主;磁铁矿、岩屑含量较高的早、中期是以近源沉积为主,搬运动力较复杂。

The results show that the sandstone reservoirs with high porosity and permeability are mainly composed of coarse-grained lithic quartz sandstone and quartz sandstone with relatively well-preserved primary intergranular pores, relatively large median radius and average pore throat radius, and relatively low displacement pressure.

结果表明:组成高孔、渗储层的砂岩类型主要是粗粒的岩屑石英砂岩和石英砂岩,其较多地保存了原生粒间孔,具有较高的中值半径和平均喉道半径以及较低的排驱压力;高能环境下有利的沉积微相和成岩早期包壳状胶结物对原生粒间孔隙的保护作用是形成高孔、渗储层的基础条件。

Sodium tellurite glasses are considered as potential candidates for non-linear optical applications because of high refractive index values and wide infrared transmittance.

亚碲酸盐玻璃一般具有较高的密度、较高的折射率、较宽的红外透过性能,同时具有较好的介电性能,一直作为非线性光学材料进行研究。

Maturation feeding weevils displayed higher anemotaxis responses to -β- pinene, myrene and limonene than those of sexually matured weevils; whereas - carene, which was detected only in volatiles of trunk phloem, elicted more olfactory respones of sexually matured weevils than of maturation feeding weevils.

在华山松枝梢挥发物中含量较高的-β-蒎烯、月桂烯和柠檬烯引起补充营养期华山松木蠹象较大的趋向反应;在华山松树干韧皮部挥发物中含量较高的3--蒈烯则引起交尾产卵期的华山松木蠹象较大的趋向反应。

Prattii- Ailanthus altissima deciduous broad-leaved forest community and Cerasus trichostorna-Cerasus dielsiana-Acer caudatum deciduous broadleaved forest community , had lower total richness and Shannon-Wiener index .

3人工林群落与次生林群落相比,人工林群落具有较低的物种丰富度指数和Shannon-Wiener多样性指数以及较高的优势度指数,次生林具有较高的物种丰富度指数和Shannon-Wiener多样性指数以及较低的优势度指数。

Imitational precision is good, which demonstrate that Visual Structure Expert Systemcan be used to imitate cable-stayed bridge construction control, under the condition that forward-calculation is used and girder cell is used to imitate the cable cell, which is capable of acquire better control precision.

施工控制各项参数实测值与理论计算值较吻合、精度较高,说明采用结构大师用正装法对斜拉桥进行施工控制仿真计算,在斜拉索模拟为梁单元的情况下,能够取得较高的控制精度。

The analytical results have shown that p ro ducts mainly consisted of some monosubstituted, disubstituted and a few trisub stituted naphthalenes. Except the low activity of HZSM-5 catalyst, all other z eolite catalysts have higher activity. HY and Hβ catalytic activities were the highest, and their naphthalene conversions attained to 79.12 and 55.79 percent respectively, but their selectivities for 2-isopropylnaphthalene, 2,6-diisopropylnaphthalene(2,6-DIPN) and 2,7-diisopropylnaphthalene ( 2,7-DIPN) were too low. ZM catalysts had good activity and much better selecti vity, especially for ZM4-3, of which its 2,6-DIPN/2,7-DIPN ratio was 2.97. Th er efore, some zeolite catalysts are recommended for shape selective isopropylat ion of coal tar naphthalene.

研究结果表明,煤焦油萘异丙基化产物主要由一取代萘、二取代萘以及少量三取代萘组成;除HZSM-5活性较低以外,其它催化剂均有较高的反应活性,其中HY和Hβ反应活性最高,萘转化率分别达75.15%和55.96%,但β位产物的选择性较差;ZM类催化剂既有一定的活性,又有较高的β选择性,是萘择形异丙基化反应理想的备选催化剂。

Coding and non-coding sequences are expected to have very different patterns of sequence changes because of the following characteristics of coding sequences: biased codon composition, higher conservation, absence of stop codons and frameshifts, higher fraction of synonymous than nonsynonymous substitutions, higher frequency of substitutions corresponding to changes of chemically similar amino acids, higher proportion of mutable contexts.

我们可以预期可转录的序列及不可转录的序列会有相当不同的序列改变特徵,因为可转录的序列有以下特色:偏颇的密码子组成,较高的保存度,有终止密码子和移码的出现,相较於异义取代有较高比例的同义取代,较高的频率出现化学结构相似的胺基酸取代,较高比例的可变之前后序列。

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