径中的
- 与 径中的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The relationship of fresh, dry biomass and their diameter of fruits took on power or exponential allometry, and linear isogony, which were significant and very significant in east, south, west and north in two sites.
樱草蔷薇果实生物量中,果实鲜、干重和其果球径两个数量性状之间或呈异速或同速生长,其相关性均达到了极显著水平,总体上均呈直线或幂函数的规律变化。
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The methods for sampling, analyses and source apportionment of particulate in air were described in detail.
研究了宁波市环境空气中颗粒物的浓度水平、粒径分布、组成特征及污染来源。
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And the cross correlation function is approximately zero, which makes them suppress the disturbances due to the other users. After describing some basic knowledge of chaotic theory in chapter 2, we interview and classify the applications of chaos in communications including chaos secure communication, chaotic spreading codes for multi-user access in spreading spectrum system and chaotic modulation and demodulation in chapter 3. FM-DCSK system with non-coherent demodulation offers the best performance in chaotic modulation schemes.
在混沌调制方案中, FM-DCSK调制是一种极具竞争力的混沌调制方式,它克服了CSK、COOK、DCSK解调中存在的估计问题的缺点,在无线信道的传输过程中,可以很好的抑制噪声干扰与多径衰落,并且能获得非常优越的解调性能,加上混沌信号本身优越的保密性能,该调制方式在未来的无线通信领域存在着巨大的潜在优势。
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Results of XRD,SEM,and UV-Vis indicated that ZnS nanocrystals can grow in and fill in the void of opal template,and SiO2 microspheres of templates are dissolved so as to form some three dimensional ordered porous structure and to form the inverse opal ZnS photonic crystals. Compared with opal templates,ZnS-opal and inverse opal ZnS photonic crystals assembled with SiO2 spheres in the same diameter show good optical properties and exhibited photonic band gap. The photonic band gap position of inverse opal ZnS moves towards UV area compared with opal and ZnS-opal.
结果表明:溶剂热法多次充填可使ZnS纳米晶在模板密堆积形成的空隙中均匀成核;经过酸处理的ZnS-opal中SiO2微球溶解、坍塌,形成蜂窝状三维有序介孔和反opal结构ZnS基光子晶体;相同粒径SiO2微球组装的opal模板、ZnS-opal以及反opal结构ZnS光子晶体均表现出光子带隙特性,但反opal结构ZnS光子晶体带隙位置相比前两者发生了蓝移。
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In order to get the 'three parameters changeable' formulaof the nonlinear spring design engineering, spring diameter, spring wirediameter and helix angle changed coinstantaneous based on spring designtheory that wildly used before is considered, the model results is showedsuccessfully in Unigraphics Solutions software by using Ugopen/APItechnology.
本文中通过考虑弹簧螺旋角的影响,在原有弹簧设计理论的基础上,通过同时改变弹簧中径、簧丝直径和螺旋角三个螺旋弹簧设计参数的方法,得到了满足刚度性能要求的&三变&螺旋弹簧的设计方法,并在三维CAD软件UGII中成功的实现了这种弹簧的三维实体数据模型的建立工作。
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GPC analysesand particle size results indicated that using PFAMA macro-CTA as the first block wasbetter than using the PBMA RAFT agent with respect to the colloidal stability and thenarrow molecular weight distribution of the F-copolymers latices.
改变合成顺序,首先在本体中合成PFAMA大分子链转移剂,然后在细乳液体系中进行BMA的聚合,凝胶渗透色谱和粒径分析表明:可以得到稳定的细乳液和分子量分布窄的含氟嵌段共聚物PFAMA-b-PBMA。
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Silicon in straw mainly exists as silica cell in polyoliths, silica cells were of unform size and about 15μm diameter. Silica cells as intact particle removed from the straw, then pricipit on the fibers with little particles than on the straws.
硅在稻草中主要以粒径为15μm的硅晶胞形式存在于植物外层,在制浆过程中硅晶胞作为整体溶脱后再以相对小的硅晶胞附著在纤维上。
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The fertilizer test base on three aspect of grain size、growth velocities 、rate of the green parts, the result present that IBDU multiple fertilizer is bigger grain size and quirkier hydrolyze rapid and more short release period than UF multiple fertilizer, which work easier burning spot on grass leaf of Green lawn; on aspect of growth
肥料对比试验中,进行了颗粒大小、生长速度和绿叶率变化等三个指标的测试,结果指出IBDU技术肥料相对UF技术肥料在沙土环境中具有水解速度快,养分释放周期短等特点,并且大颗粒的IBDU技术肥料容易在水解过程中对果岭草坪产生灼烧性斑点,而对比试验使用的UF技术肥料由于粒径较小相对克服了此点不足;在生长速度和绿叶率变化方面,IBDU果岭均提前于UF果岭达到生长高峰和全绿率,也提前下降生长速率和绿叶比值,试验最终IBDU果岭的日生长量和绿叶率均明显低于UF果岭的数值。
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Pneumatic conveying experiments were carried out using compressed air with millets of 2 mm average diameter in a horizontal Y-shaped pipe.
在水平Y型分支管道中采用压缩空气对平均粒径为2mm的小米颗粒进行气力输送试验,对在Y型管道中流动的气固两相流体的流动状态及流量分配特性进行了研究。
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The results of the simulation analysis and experiments indicate that the loss of ultraviolet scattering transmission in atmosphere is high because of the particle scattering and absorbing in solar-blind zone; that is, the received power can descend 20 dB with the distance increasing 10 times. Therefore, the ultraviolet scattering is fit for short range communication. In short range, the pulse extension due to scattering is at microsecond order and its influence for low and moderate bit rate communication systems is weak. Since the light output power of a single ultraviolet LED is low, a multi-LED array can be used to increase the transmit power and extend the communication range.
仿真分析与实验结果显示:日盲区紫外光在大气中散射传输时由于大气粒子的强烈散射与吸收,传输损耗较大,距离每增加10倍,接收功率下降20dB,因此日盲区紫外光大气散射通信适用于近距离通信场合;近距离传输时散射造成的光脉冲多径展宽为微秒量级,对中低速通信系统影响较小;单个紫外LED发光功率较低,可通过多个LED阵列来提高发射功率,增大通信距离。
- 推荐网络例句
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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)。
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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%。
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However, to get a true quote, you will need to provide detailed personal and financial information.
然而,要让一个真正的引用,你需要提供详细的个人和财务信息。