At present, the main means for time transfer are long or short wave, telephone, GPS, double star etc.
目前，国内外时间传递方式主要有长波授时、短波授时、电话授时、双星比对、GPS时间信息。
It is important to evaluate the antijamming ability of the short wave hopping communication system in real warfare.
实战条件下如何评价短波跳频通信系统的抗干扰性能是构建短波跳频通信系统的重要环节。
This infrared heaters combine a carbon heater and a short wave infrared heater in the proven quartz glass twin tube.
该产品结合了碳加热器和短波，行之有效的石英玻璃双管红外线加热器。
White opal may show a white, greenish, bluish or brownish fluorescence in long wave and short wave ultra-violet light.
白欧泊在长波和短波紫外光下显示白色、绿色、蓝色或褐色的荧光。
The trend of electronic reconnaissance in short wave is wide band reconnaissance, and channelized technology is the key of it.
宽带侦收是短波段中电子侦收的趋势，而其中信道化技术是关键环节。
The subject in this thesis comes from the researching of some special ultra short wave communication device transmission system.
本文所研究内容的课题来源于某专用超短波通信设备转信系统的研究。
The equipment of the short wave communication for telecommunication is simple and ionosphere can not be easily destroyed by man.
短波远距离通信具有设备简单、电离层不易遭受人为破坏的特点，因此，短波通信具有极其重要的战略地位。
The tactical index of Super short Wave communication is put forward, based on which, the measure of reckoning each index is analyzed.
提出对抗超短波通信的战术指标，在此基础之上，定量分析了各指标的确定方法。
Decreasing the tuning time of the antenna is very important in intelligentized and automated short wave adaptive communication systems.
缩短天线调谐时间是短波自适应通信系统智能化、自动化的需要。
Visual field analysis is interfered by HM fundus dystrophy, also relationship with study curve, long wave motion and short wave motion.
视野分析要结合眼底情况，排除高度近视的影响因素，并注意初检者的学习曲线及视野的短期、长期波动特点。
In comparison with ordinary laser processing, the advantages of ultrashort pulse and short wave to all kinds of materials are presented.
对比普通激光加工，超短脉冲和短波长对各种材料的优势作用日趋显现。
The results obtained show that the smoothing restrain is mainly for short wave noises and no energy transfer happens in wavenumber space.
结果表明，光滑化主要是抑制短波噪声，并且它不引起静电波能量在波数空间的转移。
The analysis results demonstrate that the infrared detector of the anti-missile system in the reentry can work well on short wave and medium wave.
分析结果表明，反导系统红外探测器在再入飞行段的最佳工作波段是短波和中波。
It is inevitable that the communication system is disturbed, especially the short wave communication, its signal is easily disturbed by the noise.
通讯系统中的干扰是不可避免的，尤其是短波通讯，信号更容易受到噪声的干扰。
Short wave is radio frequency band earliest utilized by human being, and short wave communication is one modern communication method with a long history.
短波是人类最早开发利用的无线电频段，短波通信是历史最为悠久的现代通信手段之一。
From the mode of information transmission, the wireless communication can be classified as long wave, medium wave, shortwave, ultra short wave, and microwave.
无线通信系统按其传播信息的方式，可分为长波、中波、短波、超短波和微波通信方式。
The Autonmatic system of Hydrological Data Acquisition and Transmission at the BikouHydropower Station is a mixed system with 1:8 short wave and 1:2 ultrashort wave.
碧口水电厂水情自动测报系统，是一个短波1：8和超短波1：2的混合体制的水情自动测报系统。
Basing on development trend of short wave frequency hopping radio, this paper analyses some key techniques about the new type short wave digital frequency hopping radio.
本文根据短波跳频电台的发展趋势，重点分析了研制新型短波数字跳频电台所涉及的若干关键技术问题。
The soft judgment decoding which improves the features of short wave channels is elaborated. Several less complicated practical soft judgment decoding schemes are given.
论证了软判决译码对短波信道性能的改善，给出几种复杂程度较低的实用软判决编译码方案。
At last, the thesis has pointed out some deficiencies of this ultra short wave communication system communication controller and the ways to modify have been described also.
文章最后指出了该超短波通信系统通信控制器的不足之处以及今后可以努力改善的方向。
Frequency hopping technology has served in all kinds of communication systems with its excellent interference resistance ability, especially in short wave communication system.
跳频通信技术因其具有良好的抗干扰能力而被广泛应用于各类通信系统中，尤其是短波通信中。
Short wave is good for broadcasting very long distances. The short wave signals bounce off the ionosphere that surrounds the Earth, back to the ground and then back to the ionosphere.
短波有利于长距离传输广播节目，短波信号被围绕地球的电离层反射，能在大地和电离层间来回反射。
The test showed that in the region dominated by sub tropical high, short wave radiation was the main cause of the SST increase, surface warm water convergence played a secondary role.
试验表明，副热带高压控制的天气情况下，短波辐射对该海区夏季异常高温的形成起主要作用，暖水辐聚的贡献占第二位。
This allows more solar radiation to penetrate the earth's atmosphere, which promotes a climate forcing effect (more short wave radiation reaches the earth, warming land and sea-surface temps).
这使得更多的太阳辐射穿透地球的大气层，从而促进气候强迫作用(更短波辐射到达地球，升高陆地和海洋表面气温)。
The results obtained prove that wide Angle scanned arrays can be realized through controlling the excitations. And the results can be instructional on designing short wave phased LPDA arrays.
所得结果表明，可以通过对激励的控制，实现阵列的宽角扫描能力，这对短波lpda相控阵的设计具有一定的指导意义。
And the solar short wave radiation, net long wave radiation and ocean heat flux are all used with a daily mean for every time step based on the sea ice mid-short range variation characteristics.
并在考虑海冰中短期变化规律的基础上，对太阳短波辐射、净长波辐射及海洋热通量，提出以日平均量代替一个时间步长内的平均来进行处理的方法。
Applying the modified extended tanh-function methods, many types of new explicit traveling wave solutions of the (2 + 1) dimensional long wave-short wave resonance interaction equations are obtained.
利用扩展的双曲正切函数法获得了(2 +1)维长波短波共振相互作用方程的多组新显式精确行波解。
Short-wave radio uses the 20-50 metre band.
短波收音机用的波段是20–50米。
This arrangement lasted until the 1930s, when the invention of short-wave wireless improved and cut communications costs.
这种安排一直持续到1930年，当时的无线短波改善和降低了通讯费用。
This arrangement lasted until the 1930s, when the invention of short-wave wireless improved and cut communications costs.
这种安排一直持续到1930年，当时的无线短波改善和降低了通讯费用。
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