Far more inexplicable is the decision to withdraw the Sentinel R.1 Airborne STand Off Radar (ASTOR) from service when it is' no longer required to support operations in Afghanistan '.

更令人费解的是让“哨兵”R . 1机载远程雷达(ASTOR)在“不再需要支持在阿富汗的行动”时退出现役的决定。

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All products must pass required customer testing both for pre pro and in line production. Any product shipped for R must comply. All production goods shipped to our customers must pass.

所有产品必须无论在生产前，生产线上亦或成品都必须通过客户指定要求的测试。

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The video conference system also has some shortages such as its lack of managing functions and limit on user numbers, so the further R&D is required.

但本系统会议管理功能较简单，由于硬件限制，支持的用户数量也有限，还需要做进一步的研究和开发。

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In a cable television appearance Monday, Rep. Ron Paul, R-Texas, said he will not step aside even if Romney clinches the GOP nomination by garnering the required 1, 144 delegates to the GOP convention.

CNN: Romney backs extending lowered student loan rates

The top Republican on the House education and labor committee, Rep. John Klein, R-Minnesota, expressed concern that tools to help students at struggling schools, such as tutoring, would move from required to optional.

CNN: Top issues: Education