差

In Japonica heterosis utilization, the purity of hybrid seeds was sometimes low due to the self-fertility and/or unstable sterility of some BT type Japonica cytoplasmic male sterile lines. For the WA type Japonica CMS lines, their sterility is much stable, but there is also some difficult to take use of them because their flowering habit is bad and it is very difficult to restore their fertility. The HL type CMS lines were identified to have the same flowering habit and outcrossing rate with the BT type CMS lines in Japonica hybrid rice. Moreover, the sterility of HL type CMS lines was more stable than that of BT type, and their restorable characteristics was better than that of WA type.

部分BT型粳稻不育系存在自交结实现象，不育性的稳定性较差，影响杂交种的纯度；WA型粳稻不育系虽然不育性稳定，但开花习性差，育性最难恢复，应用难度较大；HL粳稻不育系开花习性及异交结实率与BT型粳稻不育系无显著差异，育性稳定性明显好于BT型粳稻不育系，可恢复性明显好于WA型粳稻不育系，较好地协调了育性稳定性、开花习性和可恢复性几方面的矛盾。

Actuality are not. The discrepancy, which is about a quarter of a semitone and is known as the Pythagorean

在具体运用五度音程的循环时，12个五度音程从理论上讲应等于7个八度，但实际上不等于这个音差为半音的1／4，称为毕达哥拉斯音差。

" In the application of the cycle of fifths, 12 fifths are equal to 7 octave s in theory, but in actuality are not. The discrepancy, which is about a quarter of a semitone and is known as the Pythagorean comma,"

在具体运用五度音程的循环时，12个五度音程从理论上讲应等于7个八度，但实际上不等于这个音差为半音的1；4，称为毕达哥拉斯音差。

The traditional one is the separated system which sets the sales department as its basic unit. But in this mode there are many problems, such as, bad portability, difficult to maintain, hard to extend, expensive upgrade cost, poor parallel accessing ability.

传统的交易系统是以营业部为单位的分散系统，但这种方式存在诸多问题，如移植性差、维护困难、不易扩充、升级成本昂贵、并发访问能力差。

We conclude that the two-funds strong separation theorem holds and that the mean-variance efficient frontier is a straight line in standard deviation-expected return space under given partial information whether short selling is allowed or not.

综合考擦卖空机制和部分信息情况，我们得到结论：在确定部分信息下，无论是否允许股票卖空，二基金强分离，均值一方差有效前沿在均值一标准差空间是一条直线。

This thesis,starting from working out the arrest points and the infl ection points of the function curves of the grey mathema tical model GM(1:1 )and its residual correction model and residual period model, derives the conditions for empliying these grey models to obtain a higher class of accuracy,thus enabling the user to decide which model should be used in the light of the state of given initial sequency data.

从求得灰色数学模型GM(1.1)及其残差指数修正模型和残差周期修正模型函数曲线的驻点与拐点入手，导出使用这些灰色模型取得较高精度的条件，让使用者可依据初始序列数据的态势决定采用哪种数学模型，并且在结果未揭示以前便可大体上估计到拟合精度是否令人满意。

Assume β=1, and confidence level is 0.95, the length of normal confidence interval is compared to the length of shortest confidence interval, the results show: both absolute difference d and relative difference e are decreased by the increasing sample number n, when n≤9, e≥10%.

在假设参数β=1，置信水平为0.95的条件下，比较了常用置信区间与最短置信区间的长度，结果表明：两者长度的绝对差d和相对差e均随样本容量n的增大而减小，当n≤9时，e≥10%。

Self-cleaning process: pressure switch continues to detect the pressure difference inside and outside the filter, when the preset value is reached when the signal transmission to the control box to start cleaning cycle.

自清洗过程：压差开关持续地检测滤网内外的压差，当达到预设值时将传递信号到控制箱启动清洗循环。

The dissolution remarkedly slows down when the dissolved percentage of Ti is in excess of 22% due to lower reactivity of the perovskite and the coverage from silicic acid, of which the former may be the primary reason.

当钛的浸出率超过22%以后，浸出速度显著下降，这是钙钛矿的反应活性差以及硅酸的包裹所致，而钙钛矿的反应活性差可能是浸出速度显著下降的主要原因。

According to the computational stability analysis conducted to the linear term time difference scheme in simple harmonic motion equation, one new semi-implicit integration scheme also is designed. By adopting a kind of revised time-explicitdifference scheme to these linear terms still included in spectral model governing equations, this defect of spectral model only partly used in semi-implicit integrating scheme, can be overcome to some degree.

以简谐振动方程中线性项时间差分格式对其计算稳定性影响为理论依据，本文设计了一种新谱模式半隐式时间积分方案，此方案通过对一般谱模式求解框架中那些隐含的线性项采用了一种显式修正的差分格式，可有效克服其国际谱模式半隐式时间求积方案实质上只是部分应用了半隐式差分格式的问题。

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）。

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％。