Occupier of land resources, a large number of low-rise low-density residential is not suited to China's national conditions, low-rise high-density and high density are the choice of high-level direction.

占用的土地資源，大量的低層低密度住宅是不適合中國的國情出發(fā)，低層高密度和高密度的選擇，是高層次的方向發(fā)展91操视频。

In order to overcome the shortcomings of the old method of picture-taking, such as the low speed of picture-taking, low efficiency, off-grade pictures and low percent of pass, so the DC picture-taking system has been developed.

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The inventive light modulating elements contain a mesogenic modulating medium that exists in an optically isotropic phase when the light modulating elements are in operation and, in addition to having a good contrast, a low dependency on the viewing angle and very short switching times, they are particularly characterized by having relatively low driving voltages with a very low dependency on temperature.

根據(jù)本發(fā)明的光調(diào)制元件包含介晶調(diào)制介質(zhì)亚洲精品综合玖玖爱在线，該介晶調(diào)制介質(zhì)在光調(diào)制元件的操作期間處于光學(xué)各向同性相和，除良好的對比度国产精品igao视频网网站，低視角依賴性和非常短的響應(yīng)時(shí)間以外性生活黄色网站，其特別突出之處為相對低的驅(qū)動電壓與非常低的溫度依賴性。

The results showed that the diurnal changes of photosynthesis of S. chinensis in tile overstory took on "double-peak" curve with remarkable midday depression. The midday depression was mainly due to non-stomata1 limitations. On the contrary, the diurnal changes of photosynthesis of S. chinensis in the understory took on "one-peak" curve with low Pn. The maximal Pn was only half of that of S. chinensis in the overstory. The correlation analysis showed that the limiting factor for this low Pn might be light intensity (p=0.001). Compared with its accompanying plants, S. chinensis was in a disadvantaged status in the community with low photosynthetic capacity, water use efficiency, and the ratio of photosynthetic rate to respiration rate.

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Some of them with visual loss, optic papilledema and orbital mass. B-scan ultrasonography revealed a cyctic tumor and a strong echo spot with spontaneous movement. On CT scanning, found was a well-defined hyperdensity mass in which there was a low density area. On MRI, the signal intensity of T1WI of cystic fluid was low or moderate and of T2WI was high, while the signal intensity of T1WI and T2WI of surounding scar tissue was still low.

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The contents of Chla and Car were sensitive to low temperature stress, it seems that they were vulnerable to low temperature stress and partly decomposed. Relatively, the content of Chlb changed little. The ratio of Chla/b had positive linear correlation with temperature, which meant the photosynthetic ability of podocarpus fleuryi Hickel seedlings declined under winter low temperature stress.

葉片中葉綠素a和類胡蘿卜素含量對低溫脅迫反應(yīng)較為敏感，容易遭受低溫脅迫而部分地分解破壞日韩少妇无码网页视频，含量下降，而葉綠素b則相對變化較小国产黄色精品网站在线观看，Chla／b值呈現(xiàn)與溫度的線性正相關(guān)，顯示了長葉竹柏幼苗在冬季低溫脅迫下光合能力的下降情況午夜在线公开视频。

To study the ecophysiological effects of low temperature stress on podocarpus fleuryi Hickel seedlings, two-year-old seedlings were selected as experimental material. We conducted comparative study. On the one hand, seedlings were separately placed in the plots located at the top, half-way-up and the foot of Jinyun Mountain (different altitudes at Jinyun Mountain led to the difference in air temperature) and subjected to winter low temperature stress. On the other hand, in laboratory, seedlings were exposed to simulated low temperature stress which were artificially controlled .

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The change in the content of free proline was sensitive to low temperature stress, podocarpus fleuryi Hickel seedlings could strengthen their cold resistance through accumulating free proline., Though the hardening of low temperature, podocarpus fleuryi Hickel seedlings could increase their contents of soluble protein and strengthen their adaptive capacity to low temperatures.

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There was a little difference betweenphotosynthesis characteristic of the two varieties,response of Jiamusi to low temperature andpoor light was more sensitive than that of Longjiao No.2 and decreased pronouncedly withdecreasing light.6.EC and MDA of pepper leaves increased under low temperature and poor light,therewere no significant differences between them with decreasing light at 21-23℃/8-10℃,butthey were increased dramatically at 15-20℃/5-6℃.So we can speculate that lowertemperature was the direct reason resulted in cell membrane lipid peroxidation.7.No significant difference of SOD activity was observed under suboptimal temperatureand poor light21-23℃/8-10℃;150μmol·m~(-2·s~(-1),but SOD and POD activity substantiallydeclined with lowering temperature and light as well as treatment time.8.Under suboptimal temperature and lower light,proline accumulated to increaseosmotic regulation capacity and alleviate chilling damage.Soluble carbohydrate of pepper leaves decreased progressively and significantly with decreasing temperature and lightintensity as well as longer treatment time.So we think that synthesis and transport ofphotosynthetic product were inhibited by low temperature and poor light as solublecarbohydrate was important component of photosynthetic product.

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This paper introduced the de- sign of a mixer,which had the functions of low voltage(3 V)supplied,low power loss mixer,low noise figure, high gain compression and well structured image rejecter,and it solved the problem of intermodulation distortion .

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