查询词典 modulated

The chlorophyll fluorescence characteristics of three invasive plants which were Eichhornia crassipes, Pistia stratiotes and Alternanthera philoxeroides were measured by modulated-chlorophyll fluorometer.

方法］以3种入侵植物水葫芦、大薸和空心莲子草为材料，利用调制叶绿素荧光技术对其叶绿素荧光特性进行比较。

ATbstract: he small frequency modulated transmitter, the power is small, may launch the wireless signal, accepts the signal with the radio, satisfies certain transmission range, Circuit easy system, low cost, power output does not exceed 5-8 mW, firing range to be in the housing area of about 100 meters, with an ordinary FM radio receivers, demonstrating his superb sensitivity and clarity, the most circuit design challenges of the part is only used 3 V power supply, and half-wave antenna will be such a launch capability.simultaneously can input the sound signal, may install modulation surveillance table to serve as the monitoring device, although the power is not very big, but should the interference protection normal radiobroadcasting signal.

小型调频发射机，功率小，可以发射无线信号，用收音机接受信号，满足一定的发射距离。电路简单易制，造价低廉，输出功率不超过5－8mW，发射范围在房屋区可至100米左右，用一部普通的FM收音机接收，显示其灵敏度和清晰度俱佳，电路设计中最富挑战性的部份就是只需用3V电源和半波天线便有如此的发射能力。同时能够输入声音信号，可安装调制监视表头用作监视器，虽然功率不是很大，但是应该防止干扰正常的无线广播信号。

In the second part, potential-modulated electroreflectance spectroscopy was employed to investigate the electrochemical behaviors of electroactive species on the electrode surface.Redox behaviors of heptylviologen was studied by using ER at a silver electrode. The reoxidation behavior of heptylviologen cation radical deposited film was investigated by dc, ac and ER voltammograms.

本文用ER研究了银电极上heptylviologen的氧还行为，用直流、交流和ER伏安法研究了heptylviologen 阳离子基沉积膜的重新氧化行为，并用ER光谱和ER伏安法研究了heptylviologen阳离子基在沉积膜中的存在方式。

The finite DOS at Fermi level means that there are free carriers, i.e., a modulated electric field could change a semiconducting graphene into a semimetallic one.

值得一提的是，态密度中对应费米能为零的有限值代表著自由电子的存在。换句话说，藉由调制电场的影响可以将单层石墨系统从半导体性变成金属性的系统。

The phase of interference signal is modulated in time domain by sinusoidally changing the injection current of a laser diode.

通过正弦地改变半导体激光器的注入电流在时域内实现对干涉信号的相位调制，形成准外差干涉测量模式，提高了光程差的测量精度。

If the frequency of a laser is modulated sinusoidally, the first harmonic component of saturated absorption signal can be used as error signal to stabilize the frequency of the laser.

对激光器进行频率调制，检测原子分子饱和吸收信号中的一次谐波成分得到频率误差信号，反馈控制可以实现激光频率的稳定。

Objective To investigate whether there are any differences existing in auditory steady state responses to single or simultaneously multiple sinusoidally modulated tone stimuli.

目的 研究正常听力青年人多频稳态诱发电位单频刺激与多频刺激所记录到的反应阈，比较在4个测试频率得到的两种反应阈是否有差异。

The performance of PML is investigated using FDTD modeling of the propagation of sinusoidally modulated Gaussian pulse in a rectangular waveguide.

首先通过模拟正弦调制的高斯脉冲在波导中的传输来验证 PML 的吸收性能，然后将采用 PML 吸收边界的 FDTD法应用于矩形波导填充有限媒质时的 S参数和圆形波导中矩形薄膜片反射系数的计算。

When a sinusoidally modulated light spot was presented at their receptive field center,the on-center and off-center cells responded half a cycle (=180°) out of phase with one another at all intensities tested.

当正弦调制的光点投射在它们的感受野中心时，在不同的刺激强度下，给光中心细胞和撤光中心细胞的反应相位彼此相差半个周期(180°)。

A synchronously pumped mode-locked yetterbium-doped fiber laser is obtained when the pump semiconductor laser current is modulated sinusoidally at the appropriate frequency.

通过对抽运光源半导体激光器的驱动电流进行正弦调制，实现了掺镱光纤激光器的同步抽运锁模。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。