world class tests
世界级的测试
以上为机器翻译结果，长、整句建议使用 人工翻译 。
It tests that the linearity of XB rocket sled track has reached the first-class level in the world.
测量结果表明，XB滑轨轨道的直线度具有世界一流水平。
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It says it is using the latest world-class diagnostic tests to look for the disease in patients with symptoms.
BBC: Areas of woodland can harbour ticks
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