在...条件下

Two specieses, Lycoris radiate and Lycoris aurea, were selected for the studying of artificial propagation in vitro. A few specieses of Lycoris, from the southeast area of China and part of locations in Japan, were chosen to research their karyotype differentiation and to measure their genetic diversity by ISSR analysis. The results could be summarized as follows.1. The vegetative propagation conditions of Lycoris aurea and L. radiate in vitro was studied by two-scaling. Different illuminate condition had an effect on the bulblet formation rate. To the species of L. radiate, the rate was higher in the state of 16h 800-12001x illumination than in the darkness. The medium also affected the new bulblet formating rate. When the culture was MS medium 0.2 mg/L NAA 4 mg/L 6-BA, the bulblet formationg rate of L. aurea was 220%;at the same time, when the medium was MS 0.2 mg/L NAA 2 mg/L 6-BA, the rate of L.

本研究选择西南部分地区及日本的几个石蒜品种，从细胞学和DNA分子角度，分析了它们的遗传多样性水平和遗传结构状况，对红花石蒜和忽地笑的离体繁殖技术进行了初步研究，得出如下结论： 1 进行了红花石蒜和黄花石蒜双鳞片快速繁殖条件的研究，结果表明：红花石蒜在16小时800-1200 lx光照下比黑暗条件下出芽率要高；黄花石蒜在MS NAA0.2mg／L 6-BA4mg／L下出芽率为220％，红花石蒜在MS NAA0.2mg／L 6-BA2mg／L下出芽率为108％；NAA比IBA有利于石蒜生根；硅藻土显著提高黄花石蒜双鳞片出芽率，活性炭起抑制作用；6％蔗糖浓度有利于红花石蒜小鳞茎增重，MS 6-BA4mg／L NAA0.5mg／L培养基有利于小鳞茎增殖，切割一刀比两刀有利于小鳞茎增殖。

A new calculation model is established using the simulating curves presented by Standing and Katz. The coefficients of the correlation are determined by fitting to the data of Standing and Katz Z-factor chart. The results of the two models are compared, the conclusion can be drawn that the error of LXF model is smaller than that of DAK model.

利用两种模型对不同拟对比温度和拟对比压力组合条件下的天然气偏差系数进行了拟合计算，与理论图版值的误差对比显示，在高温高压条件下LXF模型的拟合结果更优，特别是随着拟对比压力的增加，LXF模型的误差不断减小，因此，该模型更适用于高压和超高压条件下天然气偏差系数的工程计算。

By applying the approach of the transformation of Lie group,the exact analytical solutions of the non-linear consolidation equation is obtained under different initial and boundary conditions. Based on this solution,the differences between that of large and infinite strain consolidation theories are analyzed.

运用变换群的方法求得了某些条件下大应变固结方程的完整解析解答，在此基础上与相同条件下的小应变固结论理做了比较，并通过对实例的计算，分析了不同假设条件下一维固结理论之间的差异。

The results showed that the grain yield of winter wheat with two-irrigation was higher than that with one-irrigation with the same nitrogen application rate and method. Compared to one-irrigation,the grain number per spike in two-irrigation was higher,the 1000-grain weight was lower, the water wastage was higher, but the WUE was lower. The yield was not affected significantly by nitrogen rates and the methods. Within the nitrogen rate of 157.5-295.5kg/hm2, the lower NUPE and Nitrogen Productivity declined with nitrogen rate increasing. NHI was not lower than the others at the lowest nitrogen rate of 157.5kg/hm2. The accumulation of NO3--N in soil was significantly and positively correlated with the nitrogen application rate. NO3--N in one-irrigation was distributed mainly in the top layer (0-80cm), but it was inverse in two-irrigation.

结果表明，施氮量和施氮方式相同时春浇二水冬小麦的产量高于春浇一水，二水穗粒数较一水高，千粒重则低于一水，一水耗水量较少，水分利用效率明显高于二水；同一水分下不同施肥量及施肥方式对产量的影响差异不显著，同一施肥方式下在157.5-295.5kg/hm2范围内，施肥量越大，氮素生理效率和氮肥生产力越低，施氮157.5kg/hm2时，氮收获指数均处在最高或较高水平；土壤硝态氮残留量与施氮量呈显著正相关，成熟期一水条件下土壤中硝态氮主要集中在上层(0~80cm)，二水条件下则主要分布在中下层。

The interval sowing experiments showed that 291S was a photo-thermo-sensitive male sterile line, which showed part fertile under short-day and low-temperature conditions when autumn sowing, showed high sterile under long-day and high-temperature conditions when spring sowing. The self-multiplication ability and sterility of 291S can be improved through selection effectively. The pistillody of stamens of 291S could be induced under certain photoperiod and temperature condition.

分期播种试验表明，291S是一种光温敏雄性不育系，秋播短日低温条件下表现为部分可育，春播长日高温条件下表现为高度不育，其可繁性和不育性经选择可以得到有效改良。291S在一定的光温条件诱导下会出现雄蕊心皮化现象。

Based on choosing contrast and definite water conditions, we suggested that relative mean yield of all irrigation treatments, revisionary drought yield index , revisionary water yield index , sensitivity index of stages and revisionary yield index could be used to identify yield, drought resistance, water use efficiency, water sensitivity and water adaptive.

提出在合理选用对照种和明确水分鉴定条件的前提下，采用干旱产量指数修订值鉴定品种的抗旱性，用丰水产量指数修订值鉴定各水分条件下品种的水分高效性，用各水分条件下品种的平均产量相对值鉴定品种的高产性，采用阶段敏感指数鉴定不同生育期的水分敏感性，采用产量系数修订值鉴定品种的适水性。

Sweetpotato leaf stalks had a storage life of 16 days at 6℃, 8 days at 2℃, and 6 days at 20℃,respectively.

在6℃条件下甘薯叶柄的货架期为16天，2℃条件下8天，20℃条件下6天。

We have presented a practical method for the preparation of propargylic alcohols from terminal alkynes and carbonyl compounds promoted by KOH in the presence of 18-crown-6,and subsequent efficient cyclizations of propargylic alcohols with 2-naphthol catalyzed by InCl_3·4H_2O under the solvent-free ball-milling conditions.Ball milling exhibits its superiority over the reported methods in the preparation of propargylic alcohols and naphthopyran derivatives.

采用机械研磨方法进行了连续的两步固相化学反应的研究：首先，在氢氧化钾和18-冠-6的作用下，端基炔和羰基化合物在机械研磨条件下反应可以高效地生成相应的炔醇化合物；其次，在四水合三氯化铟的催化作用下，生成的炔醇化合物和2-萘酚在机械研磨条件下环加成生成相应的萘并吡喃产物。

Adding purified stylar S-RNase from Prunus mume cultivar 'Gessekai' to liquid medium, for cultivating self- and cross-pollen at temperatures lot, 25℃ and 35℃, respectively, then determining the rate of pollen germination and the length of pollen tube after different periods of cultivating time.

在液体培养基中添加从果梅'月世界'花柱中纯化的S-RNase，并分别于10℃、25℃和35℃条件下培养自花、异花花粉，测定不同培养时间后的花粉萌发率和花粉管生长长度；离体条件下进行果梅花柱S-RNase降解花粉管RNA反应后，用琼脂糖凝胶电泳检测不同温度条件下自花、异花花粉管RNA被降解的程度。

In view of these, the second part of this paper presents two sufficient conditions and two mixed type duals for the generalized fractional programming only under-convexity assumptions. These sufficient conditions apply to a broader class of mathematical programming problems.The results about weak duality, strong duality and strictly reverse duality arealso presented under more suitable conditions.

鉴于此，本文的第二部分，我们仅在函数—凸性假设下，给出了广义分式规划的二个最优性充分条件，这些充分条件较文献中的相关的条件有更广泛的适用性；同时还给出了混合型对偶，并且在适当的条件下，给出了相应的弱对偶定理、强对偶定理，以及严格逆对偶定理。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。