Forest litter has considerable eco-hydrological effects in retarding surface runoff, trapping sediment, and equilibrating soil water and heat status.
森林凋落物具有阻滞径流、拦截泥沙和均衡土壤水热状况等功效。
Experiment results showed that compound use of efficient water-reducing admixture and retarding agent can efficiently control the pumped concrete slump loses through time.
试验结果表明,复合使用高效减水剂和缓凝剂,能有效控制混凝土坍落度经时损失。
The samples′ DTA curves were measured and the flame retarding mechanism was studied.
通过比较阻燃整理前后试样的差热分析曲线,对阻燃机理进行了初步探讨。
Therefore it has higher requirements on acid retarding and prevention of secondary precipitate.
因此对酸液的缓速和防止二次沉淀的性能有较高要求。
The phenomenon, affecting factors and retarding methods of Y-TZP low-temperature aging were reviewed.
对YTZP 材料低温老化现象、影响因素及其抑制方法作了综合评述。
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。
A new type of flame retarding mildew-resistant and water-proof tarpaulin for railway use was developed.
一种新型阻燃、防霉和防水的铁路篷布已研制成功。
This method includes an electrostatic spherical grid retarding spectrometer with a post focusing system.
球面栅静电减速谱仪具有后聚焦系统。
SEM photographs indicate that the microstructure of hardening cement with super-retarding agent is more compact.
SEM图像表明,掺超缓凝剂的水泥硬化结构更加致密。
The paper introduces the rust preventing primer, face paint and fire-retarding paint for building steel structure.
介绍建筑钢结构的防锈底漆、面漆、防火漆。
Preparation of clear flame retarding nitrolacquer for woodware was described and mechanism of flame retardant analyzed.
介绍了透明阻燃硝基木器漆的制备,分析了阻燃剂的作用机理。
Then the flame retarding and smoke suppression of the flame retardant cotton fiber were determined by cone calorimetry.
对所得阻燃棉纤维采用锥形量热分析研究其阻燃、抑烟效果。
The trials show the cement retarding agent acceptable at lower energy consumption, lower cost and no secondary pollution.
试验表明,该新工艺可生产出合格水泥缓凝剂产品,并且能耗低,成本低,无二次污染。
Experiment and analysis were set for retarder, and retarding plasticizers were matched to analyze the concrete performance.
对缓凝剂进行试验和分析,并配置缓凝型减水剂,对混凝土的性能进行分析。
It proposed that considerations on retarding time, slump loss and cement kinds are important for retarding plasticizer matching.
提出配置缓凝型减水剂应综合考虑缓凝时间要求、坍落度损失和水泥品种。
A polyurethane sealing tape which was self-adhesive and flame-retarding was prepared with polyether, TDI, MDI and flame retardant.
以聚醚、TDI、MDI、阻燃剂等制得一种具有自粘性、阻燃性的密封胶带。
The importance of plywood flame-retarding treatment and the developing trend of flame retardant in the world are briefly introduced.
简要介绍了胶合板阻燃的重要性以及国际上阻燃剂发展趋势。
The retarding properties of cement paste with the super-retarding agent have been characterized and analyzed by means of XRD and SEM.
方法利用XRD和SEM等微观手段,对掺入超缓凝剂水泥砂浆的缓凝性能进行了测试和表征。
A new technique for the durable flame retarding treatment of hydroxymethyl nylon 6 textiles with reactive flame retardants is put forward.
提出以羟甲基改性尼龙- 6织物与反应型有机磷系、溴系阻燃剂进行耐久性阻燃整理的新方法。
It aims to offer some gists for transfering of heat and mass in the combustion of Masson Pine wood and some ideas for wood fire retarding.
本研究可为揭示马尾松木材燃烧过程中的热质迁移规律提供依据,也为木材阻燃机理的研究提供新的思路。
PANOF is a new kind of high temperature resistance organic fiber, which is promising on the fields of fire-proof and flame retarding, etc.
聚丙烯腈预氧化纤维(PANOF)是一种新型耐高温的有机纤维,在防火、阻燃等领域具有广泛的应用前景。
The secondary carbides have a strong influence on recrystallization rate by retarding the migration of recrystallization grain boundaries.
退火过程中析出的二次碳化物阻碍再结晶晶界的迁移,从而影响再结晶层的界面推移速率。
P-Hydroxy anisole is one of the most widely used retarding agents in polymer industry. It can be synthesized through many reaction routes.
对羟基茴香醚是高分子工业广泛应用的阻化剂之一,合成方法较多。
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。
The four-ring reducer is a kind of new typed retarding device with many mesh points, gearing with small difference between the numbers of teeth.
四环减速器是采用多齿对啮合、少齿差齿轮传动实现减速的新型减速装置。
The results showed the fire retardance of PP was affected not only by flame retarding agent used, but also by melt flow ability of the PP system.
结果表明,PP的阻燃性能不仅受所用阻燃剂的影响外,还与体系的熔体流动性能具有很大关系。
The results indicate that proper combustion phase retarding can reduce acoustic intensity significantly and maintain the performance and emissions.
结果发现通过适当的着火延迟可以有效地降低声响强度,同时保证性能和排放基本不变。
Flame retardant selection and inflaming retarding principle are researched on winding cementing system of compound oxygen cylinder used for coal mine safe.
研究了煤矿安全用复合式氧气瓶缠绕胶接体系中阻燃剂的筛选及阻燃机理。
The flame retarding methods and flame retardant of high expansion PE were studied according to burning phenomenon of polymer and flame retarding mechanism.
根据聚合物燃烧现象和一般阻燃机理寻求研究高发泡聚乙烯的阻燃方法和阻燃剂。
Methods Sustained-release silybin microspheres were prepared by the spherical crystallization technique with solid-dispersing and release-retarding polymers.
方法采用固体分散载体和阻滞性高分子材料,使用固体分散与球晶制粒相结合的技术制备水飞蓟宾缓释微球。
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