keep 7

1

Currently , these policymakers must keep demand some 7 per cent above full-employment levels of output .

目前，美国政策制定者必须保持的需求水平，超出充分就业产出水平约7%。
2

The results showed that suitable antistaling agent , modified atmosphere packaging and appropriate wrappings can make Flammulina velutipes keep fresh for 7 days .

研究结果表明：选用合适的保鲜剂，并辅以打孔自发气调法和适宜的包装材料，可使金针菇贮存保鲜7d。
3

Results indicated that pathogen of wheat scab on millet grain can conserve for long time under 4 ℃ in refrigerator and still keep vitality after 7 years the pathogenicity didn ′ t degenerate on farmland .

结果表明，小麦赤霉菌小米粒菌体在4℃冰箱环境中可长期保存，7a之久仍有活力，且其田间致病性没有发生衰退。
4

The color of meat samples treated with 0.05 % apple polyphenol + 0.05 % nicotinic amide could keep stable redness for 7 days when stored at 5 ± 1 ℃ . The TBA and TVB-N value were 0.3mg/kg and 14.7mg/100g respectively .

0.05%苹果多酚与0.05%烟酰胺配合使用可以使鲜肉在5±1℃条件下贮藏7d后，仍保持稳定的鲜红色，TBA值为0.3mg/kg，TVB-N值为14.7mg/100g。