Non-replaceable

ecological environment is a non-replaceable capital resource, and a good ecological environment is the basis on which a nation can develop healthily and steadily.

生态环境是一种不可替代的资本，良好的生态环境是一个国家获得健康、稳定发展的基础；

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it is non-replaceable in the battlefield from past to future for the sake of its sally and defence as a main weapon in the earth.

作为陆军地面武器的主要突击和防御力量，在过去和未来的战场上有着不可替代的作用。

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communication equipment simulation is an important step for the beforehand study of communication and communication countermeasures equipment. it provides non-replaceable testing avenue for the theory study in these two research domains.

通信设备仿真是进行通信和通信对抗装备预研的重要环节，为这两个领域的理论研究和装备研制提供了重要的验证手段。

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IIR 1751, which is available now is the non-replaceable material for manufacturing meridian tube and tubeless tyre.

目前燕山生产的IIR1751牌号的丁基橡胶是制造子午胎内胎和无内胎轮胎不可替代的材料.

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since the civil service system was first introduced in our country in 1993, the evaluation system of civil service, which has undergone more than 10 years' baptism, has been gradually developed into an important incentive mechanism of the civil service system with a non-replaceable position.

1993年我国开始推行公务员制度以来，公务员考核经过了十年余载的洗礼，逐步发展成为公务员制度的一项重要激励机制，有着举足轻重的地位，发挥着不可替代的作用。

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good faith principle of insurance contracts is the basic guiding principle of insurance contracts and plays a vital and non-replaceable role in maintaining order of insurance activities, safeguarding legitimate interests of parties and balancing the interests of parties and society.

保险合同的诚实信用原则，对于维护保险活动的有序进行、保障合同当事人的合法利益、平衡合同当事人利益与社会公共利益，都有着重要而不可替代的作用，是保险合同的基本指导原则。

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IIR1751, which is available now is the non-replaceable material for manufacturing meridian tube and tubeless tyre.

目前燕山生产的IIR1751牌号的丁基橡胶是制造子午胎内胎和无内胎轮胎不可替代的材料。

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this important methodology has been so important in many fields that it has become a non-replaceable methodology in philosophic studies.

思维实验在每一个领域的作用都很重要，它已经成为了一种不可替代的研究方法。

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the electric spark build-up welding technology features less heat input and negligible residual stress etc., which is non-replaceable in the welding of special key components.

电火花堆焊工艺具有热输入量小、残余应力可忽略不计等显著特点，在特殊关键部件焊接中有不可替代性。

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phosphorus and its compounds are non-renewable and non-replaceable limited resources.

磷是一种不可再生、难以替代的有限自然资源。

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