The fire retarding effect of phenolic flame-retardants on Korean pine wood was studied experimentally.
用实验方法研究了酚类阻燃剂对红松的阻燃作用。
The fast setting of most building gypsum is unfavourable for construction. So the retarding effect of impurities can be utilized positively.
对凝结非常迅速而不利于施工的半水石膏而言，杂质的缓凝具有利用价值。
Besides, this result indicates that addition of citric acid has an obvious setting retarding effect on gypsum but may reduce the mechanical performance of its products.
掺加柠檬酸对石膏具有明显的缓凝作用，但同时使制品的力学性能降低。
Influence of factors such as resin kinds, flame retardant kinds and added quantity of the flame retardant on flame retarding effect and physicochemical performance of the nitrolacquer was analyzed.
研究了树脂的种类、阻燃剂的种类、阻燃剂的添加量等因素对阻燃效果和涂料理化性能的影响。
The effect was better in retarding crystallization of CB chocolate.
对CB巧克力的延缓结晶效果更好。
The phosphorus flame retardant was actually the function of retarding flame by three kinds of retarding flame mechanism mixed reaction with polymer, as a result, it has much higher effect.
磷系阻燃剂以三种阻燃机理同时参与聚合物的阻燃作用，因此具有很高的阻燃效果。聚合物分子中含氧元素及燃烧时容易炭化的聚合物被阻燃效果最好。
In order to prove water diversion and retarding action effect of permeable pile groins, the flow velocity formulas above and below the permeable pile groins are derived respectively.
为了验证井柱桩透水丁坝的分水缓流作用效果，建立单排井柱桩透水丁坝运行时的水量平衡方程，导出了单排井柱桩透水丁坝上下游流速公式。
In order to prove water diversion and retarding action effect of permeable pile groins, the flow velocity formulas above and below the permeable pile groins are derived respectively.
为了验证井柱桩透水丁坝的分水缓流作用效果，建立单排井柱桩透水丁坝运行时的水量平衡方程，导出了单排井柱桩透水丁坝上下游流速公式。
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