- 重点词汇
- evaluationn.估价;<数>赋值;估计价值;[医学]诊断;
- pulsed脉冲[振，动]的，脉冲调制的，受脉冲作用的;
- saturationn.（达到）饱和状态;饱和度;浸透，浸润;饱和剂;
- meansn.方法;收入;
- one of其中之一;
- inprep. 在里面;在(某范围或空间内的)某一点;在(某物的形体或范围)中;在…内;在…中;进入
- neutronn.[物]中子;
- forconj.因为，由于;
- loggingn.<美>伐木搬运业;记录，存入;航行日志;
- effectiveadj.有效的;实际的;起作用的;
- isvt.& vi. 是(be的三单形式);
- currentadj.当前的;流通的;
- 相关例句
These elements alone, however, are not quite as satisfactory for neutron shielding.
然而, 单用这些物质来防护中子不见得十分令人满意.
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One possibility is pulsars – rotating neutron stars that emIt'strong radio transmissions.
一种可能就是脉冲星——不停发出强大电磁波的旋转中子星.
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Each pulsar or neutron star is the fast-rotating, dead heart of a once-massive star.
每一颗脉冲星或中子星都曾是大质量恒星死后快速旋转的核心.
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One teaspoonful of material from a neutron star would weigh a billion tonnes.
一茶匙中子星上的物质重达十亿吨.
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In each case, the neutron star is orbiting within the outer atmosphere of its supergiant companion.
无一例外, 中子星的轨道都在其巨星同伴的外层大气之中.
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All particles which are together with the neutrons and protons are called baryons.
所有与中子、质子放在一起的粒子统称为重子.
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The shortage of neutrons in U-235 seems to give its atoms a strange sort of instability.
在U-235中缺少中子似乎给予U-235原子一种奇异的不稳定性.
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The escape of neutrons occurs at the exterior of the uranium ( or plutonium ) material.
中子的逸漏发生于铀 ( 或钚 ) 块的外表面.
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Two protons brought together will also fly apart-if neutrons are not present to hold them together.
两个靠拢的质子也会飞开 -- 如果不是有中子把它们保持在一起的话.
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