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Formosana Hayata was investigated in the present study. A significant increase in the germination rate and a small but insignificant increase in seed germinability were obtained after chilling at 4℃ for 1~6 mo and incubating under alternating temperatures of 30/20℃ with 8 h of light.

台湾油杉种子经1~6个月的4℃层积后以30/20℃(8 h光照)变温发芽,结果显示较新鲜种子直播者显著地提高了发芽速率且稍能提高发芽能力。

A series of theoretical and experimental studies on the microstrip patch antennas with dielectric superstrates is carried out systematically. Firstly, a comprehensive survey of the microstrip antenna technology and its theories are presented. Then, two analysis techniques, named as the spectral domain Green's function method and the spectral domain integral equation method are developed. The SDGF method is a simplified analysis technique, which takes advantage of the spectral domain immittance approach to find the dyadic Green's function for the stratified media, and obtains the complete closed-form formulas for radiation patterns, directivity, efficiency, gain etc. Some interesting calculated results are presented. The SDIE method is capable of determining resonant frequency, radiation characteristics, input impedance etc, for the covered microstrip patch antennas. Comparing with other full-wave analyses it reduced computation and mathematical labour remarkably. The singularities near the pole location of the surface-wave modes and the difficulty of the integral computation over infinite range of oscillating integrands are dealt with actively and documented well. Results predicted by the SDIE method agree extremely well with our experimental results for resonant frequencies of various superstrates. The superstrate effects on impedance and radiation characteristics also have been investigated experimentally so that the gap due to lack of measured data and computed results for multi-layered superstrate has been filled to some degrees and two useful observations have been achieved for weakening the resonant frequency shift and optimizing the microstrip antenna gain. As a meaningful application, the design and analysis of a 4×4 patch array are introduced.

实用微带天线普遍加介质覆盖层来防护热,物理损伤和环境影响,也可能在飞行或严酷气候条件下自然形成覆盖层本论文对带介质覆盖层的微带贴片天线系统地作了一系列理论和实验研究首先,对微带天线技术和理论作了全面的综述然后,发展了两种分析方法,称为谱域格林函数法和谱域积分方程法SDGF法是一种简化的分析技术,它利用谱域导抗法来求得分层媒质的并矢格林函数,并得出方向图、方向性系数、增益等参数的完整的闭式公式,给出了一些令人感兴趣的计算结果SDIE法能确定介质覆盖微带天线的谐振频率、辐射特性和输入阻抗等与其它全波分析方法相比,它明显减小了计算量和数学工作量已有效地处理了表面波模极点附近的奇异性和对振荡的被积函数的无限区间积分计算的困难对于不同覆盖层情况下的谐振频率,由SDIE法所预示的结果与我们的实验结果吻合得很好对于覆盖层对阻抗和辐射特性的影响也已作了实验研究这在某种程度上填补了缺少实验数据和计算结果之间的间隙,并得出了缓解谐振频率偏移和优化天线增益的两点有用的结论作为有意义的应用,介绍了一个4×4元矩形贴片天线阵的设计和分析。

With a quantitative research on the chemical and clay compositions of marly stones, their weathering rocks and residuals, as well as SEM observations, the process of dissolution of CaCO 3 and concentration of clay minerals with complex...

通过泥灰质岩石及其不同风化岩和残坡积土的化学成分、粘土矿物成分定量研究和扫描电镜观察,揭示了 Ca CO3溶蚀和粘土矿物富集过程及粘土矿物的复杂成分,发现了风化过程中伊利石向伊利石/蒙脱石混层粘土矿物的转化,解释了岩土工程性质恶化的原因,从而提高了地质研究和地质灾害研究的水平。

With a quantitative research on the chemical and clay compositions of marly stones, their weathering rocks and residuals, as well as SEM observations, the process of dissolution of CaCO 3 and concentration of clay minerals with complex components has been disclosed, and the conversion of illite to mixed-layer illite/montmorillonite discovered, which explain the reason for deterioration of geotechnical properties of the rocks and soils, thereby enhancing the level of geological and geohazards researches.

通过泥灰质岩石及其不同风化岩和残坡积土的化学成分、粘土矿物成分定量研究和扫描电镜观察,揭示了CaCO3溶蚀和粘土矿物富集过程及粘土矿物的复杂成分,发现了风化过程中伊利石向伊利石/蒙脱石混层粘土矿物的转化,解释了岩土工程性质恶化的原因,从而提高了地质研究和地质灾害研究的水平。

When rolling the roadbed, the best degree of compaction is 93%~95%. When taking Aeolian sand for preventing the water rising, the Aeolian sand replacement should be set above water table, which should normally be made at 50~80 cm depth of soil base with 15~20 cm thickness of replacement for medium wet subgrade and 20~30 cm for wet subgrade. When using stabilized soil inorganic binder for prevention and control of the frost damage, the thickness of the binder is about 25 cm The mass proportion of cement, coal and Aeolian is about 6:40:54 and lime, fly ash and aeolian is about 14:30:56. Based on these, comparative evaluation for various preventing and curing measures of the Aeolian subgrade was given.

通过对试验数据分析得到了其冻结规律,采用碾压击实法,其最佳压实度度为93%~95%;采用风积砂换填隔水法,风积砂垫层时位置应在地下水位以上,一般应在土基50~80 cm深度处铺筑,换填厚度在中湿路基为15~20 cm,潮湿路基为20~30 cm;采用无机结合料稳定土防止、防治风积土路基道路冻害,厚度均应在25 cm左右,其中水泥、煤渣、风积土的质量比约为6:40:54,石灰、粉煤灰、土三者的质量比为14:30:56,在此基础上,对各种措施的防治效果进行了对比评价。

According to the results, the naked core by powder layering method is of smooth appearance but bad in sphericity.

在素丸的制备研究中,比较了粉末层积法及液相层积法工艺特点。

The cloud microphysical data sampled with probes of Particles Measuring System in four aircraft flights during August and September in 2003 in the Beijing and surrounding regions are analyzed,in particular,the more detailed analyses have been done for stratocumulus clouds on 15 August and stratiform clouds on 4 September.

对2003年8~9月北京及周边地区4次飞机探测结果,特别对资料较完整的8月15日的层积云和9月4日的层状云系进行了较详细的分析。

The Es formation was divided into seven third order sequences based on the seismic, drilling and logging data, and plans deposition system plane distribution maps of different time were plotted by dominance phase principle. The lower Es4 is flood-overlake facies mainly; the upper Es4 is meandering stream and braided river delta deposition above the shore shallow lake background; in the Es3 period, the south mainly developed braided river, meandering stream delta, the northeast area main developed meandering stream delta, the middle area mainly developed semi-deep lakean d deep lake sediments. From lower Es3 to upper Es3, the delta scale gradually increased and the depositional area gradually moved to the east and the southeast; the Es2 period was dominated by shore-shallow lake sediments and widely developed braided river delta and delta deposits; the Es1 period was dominated by shore-shallow lake shoal deposits, and in the south developed meandering stream and braided river delta deposits.The lothological traps of the Shahejie group are mainly fluxoturbidite and stratum lateral pinch-out, and its formation and the distribution of the lothological trap were controlled mainly by the basin structure characteristic, palaeogeomorphology and tectonic activity and so on. It had a beneficial geological condition to develope sublacustrine slump turbidite fans in Jishan, Jiangjiadian and Wawu.

利用地震、钻井、测井等资料,将古近系沙河街组划分出7个三级层序,通过剖面沉积学分析,以优势相原则绘制不同时期各亚段沉积体系平面分布图:沙四下总体以洪水-漫湖沉积为特征,沙四上沉积时期是在滨浅湖背景之上发育了曲流河三角洲和辫状河三角洲沉积;沙三段沉积时期南部主要发育辫状河、曲流河三角洲,西北部地区发育曲流河三角洲,中部地区主要为深湖—半深湖沉积;由沙三下至沙三上,西北部三角洲规模逐渐增大,沉积范围逐渐向东、东南方向推进;沙二段沉积时期为滨浅湖沉积,在背景之上广泛发育了辫状河三角洲和三角洲沉积;沙一段以滨浅湖滩坝沉积为特征,南部发育了曲流河三角洲和辫状河三角洲沉积;沉积地层中的岩性圈闭以滑塌浊积岩岩性圈闭和地层侧向尖灭型岩性圈闭为主,其形成和分布主要受盆地结构、沉积古地貌和构造活动强度等因素控制,北部基山、南部江家店和瓦屋具有发育滑塌浊积扇的良好地质条件。

Engineering geological structure classification is divided into macro-, fine-, and microstructure. Macro-structures include alluvium predominated structure, multiple-binary-rhythm structure, thick boulder and gravel structure, saccate buried valley structure and tremendous composite structure, fine structures homogeneous structure, stuffed structure, porphyro-structure, and space frame structure, microstructures cemented, semi-cemented and loose texture.

利用第四纪构造与气候环境演变控制论的观点,在成因分类的基础上,对覆盖层进行了结构工程分类,按沉积相的不同组合特点分为冲积为主的结构、多重二元韵律结构、厚层漂卵石层结构、囊状槽谷结构、巨厚复合加积结构等五种类型;按颗粒组成和结合状态,分为均匀型、充填接触型、斑状型和架空型四种细观结构;按胶结成岩状态分为胶结、半胶结和松散三种微观结构。

A structural system of cross-laminated timber panel walls and floors was chosen for being locally sourced with a high level of carbon sequestration.

墙体和楼板中采用了交错层积式的木材,这种材料产自本地并在生产制造过程中严格的控制其碳排放量。

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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。