作为信号的

The scale and shape parameters of the model were estimated with the maximum likelihood method.

采用最大似然估计方法确定的模型参数作为信号特征实现故障诊断。

If it is absolutely necessary that hardware flow control is used, the null modem with partial handshaking can be an alternative.

如果必须需要使用硬流控，则带部分握手信号的无猫电缆可以作为一种选择。

By using AD9858 as the primary part of the signal source,a new model of measuring system for piezoelectricity ceramics character parameter was built up.

利用DDS芯片AD9858作为信号发生电路的核心器件，开发出了压电陶瓷性能参数综合测试系统。

Inspection of the digital display thermometer can be made by adopting the standard resistance box as the signal input according to Pt100 graduation, or by coordinated adjustment in the thermostatic bath after connecting it with the temperature controller.

数显温度计的检验可根据Pt100分度采用标准电阻箱作为信号输入，也可与温控器连接后在恒温槽上联调。

Military the beating of a drum as a signal for lowering the flag at sundown.

作为日落降旗信号的鼓声。

Indeed, many of these services rely on e-mail as an underlying signalling mechanism.

事实上，这些服务器很多都依赖电子邮件，把它作为默认的信号传输机制。

Gondii, were cloned by PCR respectively. The PCR products were digested by the corresponding enzymes and ligatd into the intermedial vectors. Finally, the inducible RNAi vector, pBSK-HSP70/5UTR-IntronC-HSP70/3UTR, with the HSP70 gene promotor as a promotor, the intron C sequence ofβ-tubulin gene as intervening sequence, 3UTR sequences of HSP70 gene as transcription stop signals, was constructed successfully, and the results of sequencing were correct. 3The construction of the inherited and inducible RNAi vector system of T. gondii: The fragment of SAG1/5UTR-eGFP-SAG1/3UTR in pBSK-SAG1/GFP vector was cloned into the vector of pBSK-HSP70/5UTR-IntronC-HSP70/3UTR to construct pBSK-GFP-Hairpin vector, then the fragment of GFP-Hairpin in pBSK-GFP-Hairpin vector was cloned into pHANA-0.5 vector.

弓形虫可诱导的反向重复序列RNAi载体的构建：设计引物，通过PCR分别扩增弓形虫HSP70基因5&UTR启动子序列(HSP70／5UTR)、HSP70基因3&UTR序列(HSP70／3UTR)及β-微管蛋白基因内含子C序列，通过酶切连接，构建以弓形虫热休克蛋白HSP70基因启动子进行驱动的，以β-微管蛋白基因内含子C序列作为间隔序列，以HSP70基因3UTR序列作为转录终止信号的反向重复序列RNAi载体pBSK-HSP70／5UTR-IntronC-HSP70／3UTR，序列测定结果正确。

The digital frequency source this paper researched uses high integrated DDS chip AD9851 as frequency sources and signal mirac processors AT89C51 as system control center, it can output 10Hz-20MHz signal with high-precision and high stability frequency. The evenness of signal within the range of 10MHz is low to 0.1dB degree, and the smallest step is low to 10Hz frequency.

本课题研究的数字频率源采用高集成度DDS芯片AD9851作为频率源；以单片机AT89C51作为系统的控制中心，实现了10Hz～20MHz的高精度、高稳定度的频率输出。10MHz内信号幅度的平坦度为0.1dB、频率最小步进为10Hz。

The semaphores can, however, be used as simple mutexes by initializing counter to one.

然而，通过初始化为1，信号量也可以用来作为简单的互斥锁。

Past minisubs have needed a lot of backup and, if unmanned, have had to be guided by signals passing down tethers .

过去小型潜艇需要很多的支援，如果是无人潜艇还需要通过连锁作为信号来引导。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。