查询词典 radon

Any of several radioactive gases that are isotopes of radon and are products of radioactive decay.

&几种氡的同位素的放射性气体，是放射性物质衰变的产物。&

Air-intaking channels built through ore lodes or crevices in rock shall be protected from the release of radon with certain measures

主要进风道开在矿脉之外，穿矿脉或者岩体裂隙发育的进风巷道有防止氡析出的措施

For example, radon.Probably one of the best mappers. His style is just insane.

比如radon是最好的地图制作者之一。

She said nobody in the UK had raised the issue of granite worktops emiting radon and Stone Federation supports the use of granite in domestic premises.

她还说没有任何人在英国提及有关花岗岩的氡放射问题，石材联盟十分支持在国内使用花岗岩。

A story about radio active radon gas being emitted by granite kitchen worktops has been given increased credibility in America on August by being published in the respected New York Times.

8月份，著名的纽约时报刊登了关于花岗岩厨房工作台面放射性的文章。

Key words:singular value decomposition;pseudo signal subspace;time-frequency distribution;Radon-STFT transform;rotation of time-frequency plane

本文提出一种Radon-STFT变换，该变换能鲁棒地确定LFM信号在时频平面上的倾斜角度，因而可以有效地克服文［3］的缺憾。

Re-estimation of risk coefficient of radon induced lung cancer was made by BEIR Ⅳ of theUnited States after calculation of data of 4 miner cohorts.

本文分析了美国电离辐射生物效应委员会发表的 BEIR Ⅳ报告。

Too much emphasis has been laid on thephase coherence detection using the arithmetics of auto-correlation in time domain,spectrum analysis in frequency domain and feature extraction of intra-pulse modulatedsignals employing the methods of quadrature in time domain、Short Time FourierTransform、Wigner-Ville Distribution and Radon-Wigner Transform.

本文详细介绍了脉冲多普勒雷达的原理及其信号特征、相参性原理、脉内调制信号、时频分析理论和模式识别理论等，重点讨论了利用时域自相关法和频域谱线分析法进行相位相参性的检测；详细分析了脉内调制特征提取的几种方法，主要包括时域正交、短时傅立叶变换、维格纳分布和 Radon-Wigner 变换。

The characteristics of radon contamination and its control measures in the exploration process, waste rock pile s,open pit ruins and tailings are discussed in this paper.

本文分析了我国硬岩型铀矿山开采区、废石堆、露天采场废墟及尾矿库中普遍存在的氡辐射环境污染现状及其发生和运移特点，并提出了相关的治理方法及治理现状。

Presence of multiples leads to poor quality in main stages of offshore seismic data processing, such as velocity analysis, stacking and imaging. Three basic multiple attenuating methods are reviewed; and a more effective multiple attenuator is achieved by joining them. As the first step, shot or receiver records are extrapolated by wave-equation datum algorithms. The extrapolation will establish a model of waterbottom multiples. Waterbotton multiples will then be removed by subtracting the extrapolated records from the original records. After that, predictive deconvolution is used to attenuate the multiples created by source ghost. Finaly, RADON transformation is adopted to separate peg-leg multiples and residual water-bottom multiples from the original data in the τ-p domain.

地震勘探尤其是海上地震勘探中存在着各类多次波，由于多次波的存在严重影响了速度分析、叠加、偏移成像等地震资料处理，海上多次波主要有全程多次波和层间多次两大类，为了压制海上不同类型的多次波，本文首先分析波场外推、预测反褶积和拉东变换衰减不同多次波的理论基础，然后联合采用这些方法，分别衰减全程多次波和层间多次波；即：首先对炮记录或者接收点记录进行波场外推，建立海底多次波模型，预测并减去全程多次波，然后利用预测反褶积衰减掉周期性明显的多次波，最后将数据转换到τ-p 域，用拉冬变换根据同一时间多次波和有效波在速度等方面的差异，进一步分离层间多次波和剩余的全程多次波，并在该域中切除分离出的多次波，从而实现联合多次波衰减处理。

Putt your way through 36 fun-filled holes of minigolf on 3D designed courses with elevated greens, bunkers, bridges and water hazards, among other crazy obstacles.

您的推杆方式，通过36个有趣的填孔迷你的三维设计的课程，以提升绿党，掩体，桥梁和水的危害，除其他疯狂的障碍。

Some participles can be used either as attributes or as predicatives.

有些分词既可当定语用，也可当表语用。