问题在于这种排除了人为因素的系统一旦模型失效，一旦公司的信用评级受到质疑，那么一切都不可信了。
The problem with an impersonal system is that when the models fail, and when companies’ ratings become suspect, everything is called into question.
选用专化抗性品种人为地单一扩大其种植面积以防治小麦条锈病，将迅速导致品种的专化抗性失效。
A special resistance cultivar grown and spread solely in a certain area to control wheat stripe rust will cause the original resistance invalidation rapidly.
根据可靠性理论建立了有人为差错情况下不可修复系统的失效模型。
The failure models of irreparable system under the conditions of the human errors are established according to the reliability theory.
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