高频率的

The higher the concentration of Cefotaxime was, the lower the rate of differentiation was; when the concentration of Cefotaxime was high 400~500mgL^(-1, the growth of callus was inhibited. However, the effect of Carbenicillin on callus was little and the differentiation of adventive buds was promoted under appropriate concentration. When the Carbenicillin's concentration was 200mgL^(-1), the differentiation rate reached the maximum 68.8%.

头孢霉素浓度愈大，213品种不定芽分化频率愈低，当头孢霉素浓度较高400~500mgL^(-1时，愈伤组织生长受到抑制；而羧苄青霉素对愈伤组织影响很小，在适宜的浓度下能促进不定芽分化，213品种在羧苄青霉素浓度为200mgL^(-1)时，分化频率达到最大值68.8%。

Based on the results, suggestions are provided to assist engineers in this field to select best parameters for saving test time of flash memories.

就NOR型的快闪记忆体测试来说，本研究发现，在相同测试条件下，随著IC电源电压升高可以减少测试时间，因为电压越高则写入与擦拭的动作会越快完成，且测试项目中最为费时的就是写入时间；提高测试频率也可以减少测试时间，因为较高的频率加快测试指令下达的速度与资料传输的时间，对於减少读取与写入的时间有极大的帮助。

The research resloves the dual-port RAM's port competition problem and realizes the resource sharing between the master and the slave processor. Although in the higher sampling frequency, the acquired data can definitely be written into the flash in time.

解决了双口RAM的端口争用问题并讨论了极限采样频率，实现了主、从单片机数据共享，缓存采集信号，即使在较高采样频率下，仍能确保及时、可靠地存储实时信号。

The technology of bar code signal restoration has been studied from the two aspects of low and high spacial frequency.

从低空间频率和高空间频率两方面对条码信号的复原技术进行了研究。

Measure character: Frequency limits: CH1:dResolution of C ～ 225MHz frequency: 10 / second time-interval resolution : N/A measures speed: Can amount to 200 times measure / the second mixes in limits of the voltage on GPIB sensitivity : DC ～ 100MHz: 200MHz of ～ of 5Vac+dc 100MHz of 20mVrms ～±: 225MHz of ～ of 5Vac+dc 200MHz of 30mVrms ～±: Input of 5Vac+dc of 40mVrms ～± adjusts:(CH1 chooses) impedance, coupling: 1M Ω or 50 Ω, ac or Dc are low connect filter: 100kHz, but switch attenuation:× 1 or reference of × 10 exterior time base inputs: 1, 5, 10MHz sparks: CH1, to rising / drop the edge sparks, the percentage that uses signal n or absolutely voltage install n, setting sensitivity mixes to low, medium or tall gate start: Automatic, the hand is moved (setting gate time or resolution digit); Exterior, defer interface: Standard GP-IB(IEEE 488.1 and 488.2), take; of SCPI compatible language to say RS-232 power source only: 10 ％ of 100-120VAC ±, 50, 60 or 10 ％ of 400Hz ± 10 ％ of 220-240VAC ±, 50 or 10 ％ of 60Hz ± are suttle: 3kg dimension: 348.3mm of × of 212.6 × 88.5H

测量特征：频率规模：CH1：dc～225MHz 频率分辨率：10位/秒时候距离分辨率：N/A 测量速度：可达200次测量/秒在GPIB上电压规模和灵敏度： DC～100MHz： 20mVrms～±5Vac+dc 100MHz～200MHz：30mVrms～±5Vac+dc 200MHz～225MHz：40mVrms～±5Vac+dc 输入调节：(CH1选择)阻抗，耦合： 1MΩ或50Ω，ac或dc 低通滤波器： 100kHz，可切换衰减：×1或×10 外部时基参考输入： 1，5，10MHz 触发： CH1，对回升/回升沿触发，用信号电平的百分数或相对电压设置电平，设置灵敏度至低、中或高闸门和启动：主动，手动(设置闸门时候或分辨率位数)；外部，延迟接口：尺度GP-IB(IEEE 488.1和488.2)，带SCPI兼容说话；只讲RS-232 电源：100-120VAC±10％，50，60或400Hz±10％ 220-240VAC±10％，50或60Hz±10％净重：3kg 尺寸：212.6×88.5×348.3mm

We found that the SCE frequency of somatic cells in Bufo bufo gargarizans was 7.83±0.49,which was higher than that of mammals in general.

此外，我们还测定了中华大蟾蜍淋巴细胞的SCE频率，发现其SCE频率比哺乳动物高，为7.83±0.49。

Therefore, established a finite element Stable response model of a horizontal whole string and carried out t the safety varied frequency of gas well after researched the natural seriously transversal vibration and compressional vibration frequency range of tubing string with packer and packerless, so that it make the tubing string to avert the covibration frequency range of natural gas excited.

本文认为以某井高产量稳产时，天然气对油管柱的外激励为简谐激振，因此研究中建立某水平井全井段油管柱稳态响应的有限元力学模型，并获得了在无封隔器和有封隔器情况下的油管柱发生严重横振和纵振的频率范围，提出了天然气安全调节频率范围，使油管柱避开可能引起严重破坏的天然气激励频率区域。

The stretching vibrational frequencies of C-H and N-H bonds of the tetrazole rings are higher than those of substituents'.

环C-H或N-H键伸缩振动频率均较取代基相应的C-H和N-H伸缩振动频率高。

The frequencies of the pacemaker currents from gastric and small intestinal ICC are very similar to the frequencies of rhythmic contraction in murine gastric and small intestinal smooth muscles; ICC network generates higher- amplitude, stabler and more rhythmic pacemaker currents than single ICC does; low concentration of intracellular free calcium is an important factor for generating pacemaker current; calmodulin is involved in the inhibitory regulation of the pacemaker current.

小鼠胃和小肠ICC产生的起搏电流频率与小鼠胃和小肠自律运动的频率非常接近；网络ICC产生的起搏电流比单个ICC稳定、幅度高、频率快； ICC内游离钙浓度的降低是产生起搏电流的重要因素；钙调蛋白在ICC内参与起搏电流的抑制性调节。

The reciprocal effects between the frequency veering and the sensitivity ofmistuning for a bladed disk are studied. The investigation is based on a finite elementmodel. The reason and features of frequency veering of the bladed disk are analyzed.By using the localization parameter, the effects of mistuning on the system modallocalization of the bladed disk are analyzed in the frequency veering region.

分析了叶盘系统频率转向现象产生的原因及其特点；利用本文提出的模态局部化参数，研究了频率转向区域内叶盘系统的高密集模态对失谐的敏感性；分析了频率转向区域内失谐叶盘系统的振动响应局部化特性。

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。