safety period

基本解释

The safety period of the long residue herbicides was evaluated, including chlorimuron, chlorsulfuron, atrazine, imazethapyr, clomazone and fomesafen.
评价了主要长残留性除草剂氯嘧磺隆、氯磺隆、莠去津、咪草烟、异草酮、氟磺胺草醚对后茬作物的安全间隔期。
The results were compared with that obtained from field measurement, the estimate methods for shutdown safety period are suggested.
在此分析基础上，推荐了安全停输时间的估算方法。
The Urumchi Railway Administration has carried out the running mechanism of safety quality system for more than 2 years. And the safety period of the Administration is prolonged.
安全质量体系运转机制在乌鲁木齐铁路局已实施两年多，全局安全周期延长。

By 2007 Fung Wah emerged from the price war period but still struggled with its safety record.
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This is more than twice the nine percent increase in overall traffic deaths reported during the same period by the National Highway Traffic Safety Administration.
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Investors who stayed fully invested during the economic downturn from September 2008 to July 2011 realized a 50% return on their investments while those who moved to what they perceived as safety realized a 2% return during that time period.
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