In California, a lack of genetic variation in the Argentine ant has allowed the species to spread widely.
在加利福尼亚，阿根廷蚂蚁由于缺乏基因变异而得以广泛传播。
If a user were to try any other variation of his name, such as Internet email address, he would not be allowed to access the system.
如果一个用户尝试他的名称的任何其他变量，比如互联网电子邮件地址，将不允许他访问系统。
They don't reckon individuals, so therefore individual variation and imperfection can be allowed.
它们并不强调个体，因而也允许个体有差异和缺陷。
Application faults, such as over-spray, pores, cracks, color variation, or foreign objects embedded in the paint, are not allowed.
涂刷缺陷，如过度喷涂、气孔、裂纹、颜色差异或在涂料中嵌有异物等都是不允许的。
Tolerance is the amount of variation permitted in the part or the total variation allowed in a given dimension.
公差是零件允许的变动量或给定尺寸允许的总变动。
The conservator will remark that the RH variation is still extreme, compared with the variation allowed by museum standards.
文物保护专家指出，以上研究和博物馆标准相比，相对湿度变化仍然严重。
Effective Diameter-The tolerance is the amount of variation allowed in the manufacture of the tap.
中径一公差是在丝锥的制造中所允许的变异量。
The appearance, mechanical property and stealth property of the coating had unobvious variation after 24 months of exposure and remained in allowed area.
通过24个月的考核，得到了该涂层外观、力学性能及隐身性能变化不大，仍保持在技术指标范围内的试验结果。
This is because machines are not perfect, and the tools become worn. A slight variation from the exact size is always allowed.
这是因为机器并非尽善尽美，而且这些工具也会老化，确切尺寸也要允许略有误差。
This is because machines are not perfect, and the tools become worn. A slight variation from the exact size is always allowed.
这是因为机器并非尽善尽美，而且这些工具也会老化，确切尺寸也要允许略有误差。
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