This chapter starts from the history and characteristics of the low-field NMR, then introduces the phenomenon of nuclear magnetic resonance free induction decay ( FID) signal and spin-echo signal and their obtaining principle, and the entire experiment measuring devices and circuit analysis.

Studies on abnormal development of embryo in nuclear free litchi

无核荔枝胚胎异常发育的研究

In this paper, the properties of system consisting of various nuclear species and free nucleons are described by a nuclear statistical equilibrium system consisting of a typical heavy nucleus, a particles, free neutrons and protons.

本文采用由自由核子，α粒子及平均重核组成的核统计平衡模型描述由自由核子和许多种类原子核组成的系铣。

At last, international regime of nuclear non proliferation impels the countries to establish nuclear free zone in succession. However, not only the international security environment outside, but also the defects of the regime itself result in the limitation of the international nuclear non proliferation regime.

最后，国际核不扩散机制促使世界各地陆续建立了无核区。但是，国际安全大环境等外部原因和机制内部的自身缺陷也造成了国际核不扩散机制效用的局限性。

Continuation Committee of the Conference for a Nuclear Free Pacific

太平洋无核区会议常设委员会

An Analysis on the Outlook of the South-east Asian Nuclear Weapon Free Zone

东南亚无核区前景透析

That is the great paradox of nuclear deterrence: if you don't have it and dream of a nuclear weapon free world, there actually may be a hot war.

核威慑的悖论是：如果你没有核武器，或者假想这是一个无核世界，那么热战就不可避免。

The billionaire philanthropist said he had invested about$ 1bn in dozens of early-stage companies-including battery, next generation nuclear and free air carbon capture-hoping they would develop "breakthrough" technologies.

这位亿万富翁慈善家表示，他已对数十家早期阶段公司投资约10亿美元，希望它们将开发出“突破性”技术。这些公司活跃于电池、下一代核电和大气层碳捕捉等领域。

Treaty on South-East Asia nuclear weapon free zone;

东南亚无核武器区条约；

Evaluation of methods for human nuclear DNA extraction from free margins of finger nail and hair samples

指甲游离缘及毛发中核DNA抽提方法的探讨

Delhi Declaration on Principles for a Nuclear-Weapon Free and Non-Violent World

创造无核武器和无暴力世界的德里原则宣言

Objective To study poisoning by hydrofluoric acid burn on early apoptosis percentage of single nuclear cell and free calcium concentration in the cell of rabbit.

目的研究氢氟酸烧伤中毒后对兔外周血单个核细胞早期凋亡百分率和胞内游离钙浓度（[Ca~（++）]i）的影响。

China will continue to work with the international community to make contributions to the establishment of a nuclear weapon free zone in the Middle East and to peace and security in the Middle East.

中方将与国际社会一道，为建立中东无核武器区，为实现中东地区和平与安全继续做出努力和贡献。

China will continue to support ASEAN efforts in establishing the ASEAN nuclear free zone, and is willing to sign the protocol on the Southeast Asian Nuclear Free Zone Treaty at an early date.

我们将继续支持东盟建立东南亚无核区的努力，愿意尽早签署《东南亚无核武器区条约》议定书。

It says it has nuclear weapons and will make more, despite having signed several agreements to remain nuclear free.

据说北韩已经有了核武器，并将要制造更多，即使已经签署了多个保持无核化的协议。

South Pacific Nuclear Free Zone Treaty ( Treaty of Rarotonga )

南太平洋无核区条约 ( 拉罗通加条约 )

...proposals for a nuclear-free Korean peninsular.

朝鲜半岛无核化建议

Strathclyde council has declared itself a nuclear-free zone.

斯特拉思克莱德区委员会宣布本区为无核区。

a nuclear-free zone

无核区

We undertake a new job with no idea of the more indirect consequences of our action.

在承担起一项新工作时，我们并不知道这样做会带来什么更间接的结果。

Nowadays, middle-aged people not only take care of the elderly, but also take care of the children, at the same time, they probably undertake their heavy job duties. So they usually feel unable to care for the elder people attentively.

如今的中年人被夹在既要照顾老年人，又要照顾子女的夹缝中，同时，他们又可能承担着各自工作单位主力的职责，因而，这一切使得中年人对照顾老人感到力不从心。