As a result, instance is now non-null and refers to a valid Singleton object.
结果是，instance现在为非null并引用一个有效的Singleton对象。
Workaround: Ensure that you are using valid, non-expired security certificates issued by a trusted root certification authority.
处理：确保您在使用由可信任的根证书颁发机构颁发的有效的、非过期的安全证书。
Watch for Waste - Millions of tickets go unused, even though most non-refundable fares are valid for travel for up to a year.
虽然多数不可退还的机票的有效期长达一年，但还是有数以百万张机票最后被浪费掉。
Simulation result shows that the scheme is valid to suppress directional strong interference for STBC MIMO system although with some performance loss compared with the ideal case of non-interference.
仿真结果表明该方案虽然相对于理想无干扰的系统来说有一定的性能损失，但是能有效抑制空时分组码MIMO系统中的强定向干扰。
Non-Chinese citizens are required to submit copy of valid Chinese residence permit.
非中国公民还需要提交您有效的中国居留许可。
Non-Chinese citizens are required to submit copy of valid Chinese residence permit.
非中国公民还需要提交您有效的中国居留许可。复印件可接受。
Through usability analysis of the radar system, it examined the model possibility and provided the valid methods for availability analysis to non-Markov system.
通过对雷达系统的可用性分析，检验了模型的可行性，为非马尔可夫型系统的可用性分析提供了有效的方法。
So the real reasonable and valid appraising system should include the financial indicator and non-financial indicator, that is qualitative indicator.
因此真正合理有效的评价体系还应包括非财务指标，即定性指标。
Secondly, we study the problem of mining valid and non-Redundant association rules.
第二是研究了挖掘有效且无冗余关联规则的问题。
Invalid database name. A non-empty string was expected. Enter a name using valid characters and try again.
数据库名称无效。需要非空字符串。请输入使用有效字符的名称，然后重试。
There are still many areas where animal testing is necessary and non-animal testing is not yet a scientifically valid and available option.
目前在许多领域，动物实验仍是必要的，非动物实验还不是一个科学有效和可行的选择。
Tenders with an ineligible valid period shall be rejected as non-responsive tenders.
投标有效期不满足要求的投标将被视为非响应性投标而予以拒绝。
The method starts with the theoretically minimum frequency and searches for the minimum valid sampling frequency using variable step sizes subject to three non-aliasing constraints.
该方法从理论上可能的最小采样频率出发，根据采样后频谱不发生混叠的3种约束条件来确定可变的频率步长，搜索可用的最小频率。
The method starts with the theoretically minimum frequency and searches for the minimum valid sampling frequency using variable step sizes subject to three non-aliasing constraints.
该方法从理论上可能的最小采样频率出发，根据采样后频谱不发生混叠的3种约束条件来确定可变的频率步长，搜索可用的最小频率。
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