对拖拉机试验过程进行监视记录，运用计数抽样检验法则对试验过程进行分析和控制，从而达到试验过程质量可控。
We monitor and record the testing process of tractor, analyze and control the testing process through sampling inspection by attributes, and this can make the test process quality be in controlling.
如此提出的法则必须用到新情况下加以检验；
A suggested law should be tested by being applied in new circumstances;
如此提出的法则必须用到新情况下加以检验；
A suggested law should be tested by being applied in new circumstances;
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