种
- 与 种 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 cotyledon and seed coat were cooked at 120℃ 10~50 min and compare their content of pH and chlorophyll. The result showed pH value of seed coat(6.25~5,46)was lower then cotyledon(6.35~6.06). The increase of acidity and heat treatment caused content of chlorophyll in the seed coat to decrease(6.57~1.28 mg/100 g)and form pheophytin.
绿豆子叶、种皮於120 ℃烹煮10~50 min时,发现种皮pH值(6.25~5.46)较子叶(6.35~6.06)为低,於酸性环境与热造成种皮中叶绿素含量降低(6.57~1.28 mg/100g),并形成褐黄色的脱镁叶绿素,此现象与种皮b值增加(21.55~34.85)具关联性。
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Fucata as well as Pteria penguin were studied using RAPD markers in order to develop interspecific marker for species identification;(2) inheritance of AFLP markers in families of Pinctada fucata were investigated using AFLP markers, based on which a draft genetic map was constructed.
其中引物S10对7种珍珠贝的RAPD产物呈现出物种的特异性,可同时将7种珍珠贝分开,其余引物可以将2种或2种以上的珍珠贝区别开来。
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Mila, if the lab could only use maybe 1,2 or 3 materials for anteriors and 2 or 3 for posteriors, what are their favorites.
如果技工室只可能有1种、两种或者3种材料用于前牙,2或3种用于后牙,他们最喜欢的是什么系统啊。
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Mila, if the lab could only use maybe 1,2 or 3 materials for anteriors and 2 or 3 for posteriors, what are their faorites.
如果技工室只可能有1种、两种或者3种材料用于前牙,2或3种用于后牙,他们最喜欢的是什么系统啊。
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Therefore, we selected common species of Ranunculaceae. comparative primordial plants in Alpine Meadow at Eastern QinghaiTibetan Plateau, and studied the reproductive strategies, such as reproductive allocation, especially sex allocation, to understand how the plants adapt the environmental conditions. The results showed:(1) At higher altitude, the self-incompatible plant, such as Trollius ranunculoides tended to become limited by pollination rather than by nutrient availability, while the self-compatible plants, such as Anemone rivularis and A. obtusiloba seemed not to be limited by pollen availability, which suggested that ability of self pollination for alpine plants may be a mechanism of reproductive assurance.(2) Influences induced by high altitude on the reproduction of these species occurred on different reproductive characters, which suggest species-specific adaptive strategies. The influences are dependent on plant size to some extent.
因此,我们选择在青藏高原东部的高寒草甸,以比较原始的植物类群—毛茛科植物为研究对象,选择一些常见种探讨其繁殖对策,如繁殖分配和性分配问题,试图揭示这些植物如何适应环境条件,最后的结果表明: 1高寒草甸高海拔区,自交植物(如小花草玉梅A.rivularis和钝裂银莲花A.obtusiloba)的繁殖不受花粉限制,而完全异交植物(毛茛状金莲花T.ranunculoides)的繁殖受花粉限制,表明高海拔地区植物的白花授粉能力可能是一种繁殖保障机制,能够避免恶劣环境对植物有性繁殖的不利影响; 2海拔高度对植物的影响因种而异,不同的物种受影响的繁殖性状不同,即使同属亲缘种间也存在差异,表明不同物种对相似环境压力的适应对策不同;而且,海拔高度对植物的影响在一定程度上依赖于植物个体大小,说明植物通过调整其个体大小与繁殖性状的关系来适应环境梯度的变化; 3植物花期和果期的繁殖分配并不完全随海拔升高而减小(只有小花草玉梅的果期RA随海拔升高而减小30%),与Iwasa和Cohen的预测不完全一致(他们认为繁殖分配随生长季缩短而减小)。
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But in practical operating, overvoltage caused by reignition of the vacuum switching device frequently appears, and it result in damage of the capacitor bank or the switchgear itself. Ensuring the switchgear against reignition and installing a protective device are two main approaches to avoid the phenomenon. In this paper, a study on overvoltage caused by reignition due to capacitor bank switching with the vacuum switching device and its preventive measures are carried out. The main work which has been done and researches are as follows: 1. The producing mechanism of overvoltage and its influence factor are analyzed. It is pointed out that single-phase reignition is the main reason for damage of the switchgear and two-phase reignition is the main reason for damage of the capacitor bank,so overvoltage of single-phase reignition and two-phase reignition are the emphases of prevention. 2. Analysis of the special working condition of the operating switch for capacitor bank is carried out. It indicates that the vacuum switching device is difficult to realize no-reignition under this operation condition, so it is more practical to adopt protection devices. 3. Analyses of protection effect of RC and MOA and their shortages are carried out. It shows that the two methods can only restrain effectively overvoltage caused by single-phase reignition, and they cannot protect the capacitor bank when reignition of two-phase occurs. 4. The operation principle of G-R damping device is analyzed and discussed emphatically.
本文针对真空开关投切电容器组时因重燃而产生的过电压及其防治措施进行了研究,所开展的主要工作和研究结果如下: 1、对过电压的产生机理及其影响因素进行了分析,指出单相重燃是导致开关设备损坏的主要原因,而两相重燃则是导致电容器组损坏的主要原因,因此单相重燃和两相重燃过电压是防护的重点; 2、对电容器组操作开关的特殊运行条件进行了分析,指出在这种运行条件真空开关难于实现不重燃,因此采用保护装置更具有现实意义; 3、对RC与MOA的保护效果和存在的不足进行了分析,指出这两种方法均只能有效抑制单相重燃过电压,而不能在发生两相重燃时保护电容器组; 4、重点对G-R阻尼装置的工作原理进行了分析和讨论,指出该装置接入后线路中将会出现两种频率的高频振荡,而电容器组上的过电压是由这两种振荡共同决定的; 5、根据对上述两种振荡的分析指出存在一个最佳电阻值使得过电压最低,并提出了电容器组电压和最佳电阻值的近似求解方法; 6、使用电气暂态分析软件MATLAB对G-R装置的保护效果进行了仿真计算,证实该装置确实可以有效抑制重燃时的电容器组过电压; 7、根据仿真与近似计算结果的偏差提出了近似计算的修正方法,经过修正后的过电压计算结果与仿真结果吻合较好; 8、对G-R装置中放电装置G与阻尼电阻R的要求进行了分析,指出采用编织电阻和真空间隙可能是最佳选择。
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In general, there are two types of modern company management model s: one is called "single-strata system" representatively in Britain and USA; the other is called "double-strata system" representatively in Germany and Japan.
现代公司治理模式一般分为两种:一种是以英美为代表的&一元制&治理模式,另一种是以德、日为代表的&二元制&治理模式,由于政治、文化、法律传统的不同,两种治理模式中所设计的监督机制也存在诸多差异。
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It showed that the niche breadth and niche overlapping indexes of the enclosed grassland in 2007 are much lower than in 2006 as a whole; The niche breadth of Artemisia ordosica is bigger than other species in the region in 2002. In 2003, the dominant species were Artemisia ordosica and Salsola ruthenica. Their niche breadth indexes were 0.544 and 0.460 respectively. The results of niche overlapping in 2006 and 2007 also showed that the species with big niche breadth didn't always have big niche overlapping, and the niche breadth and niche overlapping did not have a positive direct linear relation.
结果表明:2007年封育区植物种的生态位宽度及种间的生态位重叠指数总体上较2006年有所降低;2006年黑沙蒿生态位宽度最大,达0.768,是06年封育区的优势种;2007年封育区的优势种为刺沙蓬和黑沙蒿,其生态位宽度值分别为0.544、0.460;2006年和2007的生态位重叠结果均表明,生态位宽度大的物种不一定和其他物种有大的重叠指数,较高的生态位宽度和较高的生态位重叠之间并不存在直接的线性关系;2006年、2007年较高的Pianka生态位重叠指数都出现在生态位宽度较小的物种之间。
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In order to disclosure the formation rule of predominant species in different nutrition conditions,three kinds of nutrition concentration were selected for the competition experiments with the common species of blue-green algae bloom Microcystis aeruginosa and the common species of green algae bloom Scenedesmus quadricauda .
为了揭示不同营养条件下,藻类优势种的形成规律,选取了3种具有代表性水体的营养盐浓度,对于蓝藻水华的常见种铜绿微囊藻和绿藻水华的常见种四尾栅藻进行了竞争实验。
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Serpula similis is newly recorded in China, and an illustrated description of the species is given according to the Chinese material.
中国干腐菌属共有3种,根据中国的材料对每种的担孢子进行测量和统计,并给出了该属种类的检索表,相似干腐菌为中国一新记录种,对该种进行了详细描述和显微绘图。
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力