Though unstable, many mesons last a few billionths of a second, long enough to be observed with particle detectors . They are readily produced in the collisions of high-energy subatomic particles (e.g., in cosmic rays).

介子虽然不稳定,许多介子只存在10亿分之几秒,但用粒子探测器已足以观察到它们。高能的亚原子粒子(如宇宙线中的)之间的碰撞很容易产生出介子。

属类：自然科学-物理-

we have today telephoned the supplier, ABC Ltd, and have been assured that a consignment of the detectors is expected to arrive from the factory ad be delivered within 24 hours of this receipt.

今天我公司已电话同供货方ABC公司联系,对方保证一批检测器即将由工厂运到,货到后将于24小时内交货。

属类：商务文书-外贸函电-因迟交道歉

Radiological protection standards for ionization smoke fire detectors

离子感烟火灾探测器放射卫生防护标准

属类：行业标准名称-卫生-

INTRUSION DETECTION. VERY-HIGH FREQUENCY MOTION DETECTORS . SPECIFIC STANDARD.

侵入的检测.超高频率的运转检测器.特殊标准

属类：行业标准名称-国际标准-NF C48-229-1987

INTRUSION DETECTION. ULTRASOUND MOTION DETECTORS . SPECIFIC STANDARD.

侵入的检测.超声波的运转检测器.特殊标准

属类：行业标准名称-国际标准-NF C48-230-1987

INTRUSION DETECTION. ACTIVE infrared DETECTORS . SPECIFIC STANDARD.

侵入的检测.动态红外线检测器.特殊标准

属类：行业标准名称-国际标准-NF C48-226-1987

INTRUSION DETECTION. OPENING DETECTORS ,CONTACT. SPECIFIC STANDARD.

侵入的检测.开口式接触检测器.特殊标准

属类：行业标准名称-国际标准-NF C48-227-1987

INTRUSION DETECTION. SHOCK DETECTORS ,RUNNER AND BALL. SPECIFIC STANDARD.

侵入的检测.离心调节锤和弹子撞击的检测器.特殊标准

属类：行业标准名称-国际标准-NF C48-228-1987

INTRUSION DETECTION. DETECTORS . GENERAL REQUIREMENTS.

侵入的检测.探测器.一般规定

属类：行业标准名称-国际标准-NF C48-225-1986

If we were to try burying our detectors in order to attenuate the surface waves, we would soon grow discouraged

如果企图用埋置检波器的方法来衰减面波,很快就会发现这种做法是徒劳的。

属类：综合句库--

Calibratium of the helium leak for leak detectors .

渗漏探测仪氦渗漏.校准

属类：行业标准名称-国际标准-NF X10-531-1981

Experiments involve a light source, a prism or grating to form the spectrum, detectors (visual, photoelectric, radiometric, or photographic)for observing or recording its details, devices for measuring wavelengths and intensities, and interpretation of the measured quantities to identify chemicals or give clues to the structure of atoms and molecules.

实验包括一个光源、一块用来形成光谱的棱镜或光栅、用来观察或记录光谱细节的探测器(视觉的、光电的、测辐射的或者摄影的)、测量波长和强度的装置以及对测得的量作出解释以识别它的化学身份,或给出关于它的原子和分子结构的线索。

属类：自然科学-物理-

With the ease, radiation detectors can be used semi-quantitatively in the field

使用射线探测器可以很方便地进行野外半定量测定。

属类：综合句库--

Smoke detectors are fit in all the rooms .

所有的房间都装有烟尘警器。

属类：口语表达-未分类-

Least sensitive of all the types of detectors for detecting low levels of radiation.

所有类型的探测器对低辐射能量的探测灵敏度最低。

属类：行业术语-检验检疫-

Specially reinforced roadblocks, in addition to metal detectors , patrolling hounds and about two thousand police officers, will turn the Mall into a fortress

特别加强的路障,加上金属探测器、巡逻犬和约两千名警力,将草地广场变成一座碉堡。

属类：综合句库--

Figure 91 illustrates a string of detectors and Figure 92 the string assembled on a hasp for transportation

图91表示检波器小线,而图92表明为了运输方便把小线扣在铁环上的情形。

属类：综合句库--

Blank detail specification for microwave detectors and mixer diodes

微波检波、混频二极管空白详细规范

属类：行业标准名称-国家标准名-GB/T15177-1994

Microbeam analysis-Instrumental specification for energy dispersive X-ray spectrometers with semiconductor detectors

微光束分析.带半导体探测器的能量发散X射线分光仪的仪器规范

属类：行业标准名称-ISO标准-

Microbeam analysis-Instrumental specification for energy dispersive X-ray spectrometers with semiconductor detectors

微光束分析.带半导体探测器的能量散射X射线光谱仪的仪器规范

属类：行业标准名称-国际标准-BS ISO 15632-2002

We must use photocell as detectors

我们必须用光电管作为探测器。

属类：综合句库--

Non-destructive testing; penetrant flaw detectors ; general technical requirements

无损检测 穿透缺陷检测仪 总技术要求

属类：行业标准名称-ISO标准-

Non-destructive testing; penetrant flaw detectors ; general technical requirements

无损检验.穿透缺陷检测仪.总技术要求

属类：行业标准名称-国际标准-ISO 9935-1992

NON-DESTRUCTIVE TESTING. LEAK TESTING. CHARACTERIZATION OF MASS SPECTROMETER LEAK DETECTORS . (EUROPEAN STANDARD EN 1518).

无损检验.渗漏试验.度谱仪渗漏检测特性

属类：行业标准名称-国际标准-NF A09-460-1998

Technical requirements and test methods for line type heat detectors

线型感温火灾探测器技术要求及试验方法

属类：行业标准名称-消防-

It should be noted that these detectors will detect some electromagnetic radiation (gamma and x-ray), however, they are extremely inefficient, and generally should not be used for this purpose.

需要注意的是,这些探测器将可探测一些电磁辐射(7射线和x射线),但是,它们效率极低,一般不用于这一用途。

属类：行业术语-检验检疫-

Built-in thermal protection for rotating electrical machines-Thermal detectors and control units used in thermal protection systems

旋转电机装入式热保护热保护系统用热检测器和控制单元

属类：行业标准名称-国家标准名-GB/T13599-1992

Medical electrical equipment. Part 2 : particular requirement for the safety of patient contact dosemeters used in radiotherapy with electrically connected radiation detectors .

医用电气设备.第2部分:具有电连接辐射探测器的辐射治疗用病人接触剂量计的安全特殊要求(欧洲标准EN 60 601-

属类：行业标准名称-国际标准-NF C74-207-1997

Medical electrical equipment-Dosimeters with ionization chambers and/or semi-conductor detectors as used in x-ray diagnosis imaging.

医用电气设备.用于X射线诊断成像中带电离室和/或半导体探测器的剂量仪

属类：行业标准名称-国际标准-NF C74-204-2002

Typical detector probes used with portable radiation survey instruments are as follows: GM Detectors (" Geiger-Muller")

用于便携式放射性检测仪器的典型的探测器有以下几种:盖革探测器

属类：行业术语-检验检疫-