对健康人自然没什么，佩斯博士强调，但是对于那些免疫系统缺陷或者那些易患肺部疾病的人群——就是老人——最好做好预防工作。
Not for healthy people, insists Dr Pace, but those with a compromised immune system or who are at risk of pulmonary diseases—the elderly, say—may want to take precautions.
这些孩子在1997-2003年之间出生，并且参加了国家出生缺陷预防研究，这项研究从10个州的10个出生缺陷监测系统中提取数据。
The children were born between 1997 and 2003 and were participants in the National Birth Defects Prevention Study, which drew data from 10 birth-defect surveillance systems in 10 states.
通过改进浇注系统，特别是采取在进、排气道芯砂中添加特殊抗脉纹添加剂及在砂芯表面涂刷烧结型涂料等工艺，有效地预防和消除了脉纹缺陷。
Veining defects have been effectively prevented and eliminated by improvement on gating system, especially by special additive to core sand and sinter coating on surface of sand core.
在试制铝合金半固态压铸汽车零件过程中，引入计算机模拟技术用于充型过程的预测与缺陷的预防，实现了充型工艺系统的优化设计。
Computer simulation was employed to optimize filling system to predict filling process and prevent the defects for al alloy automotive parts in semi-solid die casting.
建议在质量工作中推行FMEA技术，系统、有效、低成本地做好质量缺陷预防工作，做到有备无患。
FMEA technology is advised to be applied in quality work, so as to prevent quality failure systematically and cost-effectively.
方法资料来源于“中美预防出生缺陷和残疾合作项目”以人群为基础的出生缺陷监测系统。
Methods the data was obtained from the birth defects surveillance system of China-US collaborate project on prevention of birth defects and disability.
方法资料来源于“中美预防出生缺陷和残疾合作项目”以人群为基础的出生缺陷监测系统。
Methods the data was obtained from the birth defects surveillance system of China-US collaborate project on prevention of birth defects and disability.
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