正交的

However, OFDM systems can be extremely sensitive to synchronization errors. Minor carrier frequency offset and symbol time offset can cause intersymbol and intercarrier interference and degrade system performance very seriously.

然而，正交分频多工对於对同步错误极为敏感，些许的载波频率偏移与符元时序偏移就能造成符际干扰及子载波干扰，导致系统效能变差。

Time variations corrupt the orthogonality of the OFDM subcar-rier waveforms so that intercarrier interference occurs.

OFDM系统对时间选择特性信道非常敏感，Doppler频移的出现会造成OFDM系统子载波不再正交，对系统引入载波间干扰。

For orthogonal frequency division multiplexing systems in high-mobility environment, channel variations within one OFDM symbol will introduce intercarrier interference, thus lowering the system performance.

对於应用於高移动通讯环境之正交分频多工(Orthogonal Frequency Division Multiplexing， OFDM)系统，每一个OFDM符元期间的通道时变导致载波间干扰(Inter-carrier Interference， ICI)发生，使得系统效能降低。

A method for synthesis of isobutyl acetate based on paratoluenesulfonic acid as catalyst was developed.

以冰醋酸、异丁醇为原料，对甲苯磺酸为催化剂合成乙酸异丁酯，通过正交实验考察了原料比、催化剂用量、带水剂用量和反应时间等因素对反应的影响。

The best parmeters of technological process on the fermentation of itaconic acid by Aspergillus terrus was stuied.

利用正交试验法对土曲霉发酵生产衣康酸工艺条件进行研究，获得了较优越的工艺条件，使衣康酸得率提高到43.8g/L。

The results showed that molar ratio of cyclohexanone to ethylene glycol was 1∶1.4, the amount of catalyst was 2% cyclohexanone, amount of cyclohexane was 10 mL, the reaction time 2 h, the yield of cyclohexanone ethylene ketal reached 99.6% under the optimum condition.

通过正交实验得出了最佳反应条件：n∶n=1∶1.4、催化剂用量为环己酮质量的2%、带水剂环己烷用量10.0 mL、反应时间2 h，缩酮产率可达99.6%。

The optimum adding amount of them based on noodle total score by orthogonal design: defatted soy flour is 8%; konjak powder is 0.5%.

通过正交实验得出以面条综合评分为指标的最佳添加量为脱脂大豆粉8%、魔芋粉0.5%。

Taking refined konjak powder as raw material, taking the mixture of NaH2PO4 and Na2HPO4 as phosphate esterification reagent, the konjac glucomannan phosphate ester was prepared under the dry condition, and the optimal process of konjac glucomannan phosphate ester was optimized by orthogonal test method.

方法］以细化的魔芋粉为原料，以NaH2PO4和Na2HPO4混合物为磷酸酯化试剂，在干法条件下，制备魔芋葡甘聚糖磷酸酯，并采用正交试验法优化魔芋葡甘聚糖磷酸酯最佳工艺。

In the present work, the synthesis of phytosterol laurate was studied, which was esterified directly by using sodium dodecyl sulfate as catalyst. And the optimal conditions were obtained by single-factor and orthogonal experiment.

研究使用十二烷基硫酸钠为催化剂，通过羧酸直接酯化，合成植物甾醇月桂酸酯的工艺，利用单因素试验和正交试验确定最佳工艺条件。

The characters of crude extracellular laccase from Lenzites tricolor were studied.

并通过正交实验研究了碳源、氮源、木素类似物以及初始pH值对该菌产胞外漆酶的影响。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。