查询词典 urea

Using ethylenediamine, urea, methanal and formic acid as base material, 1, 3-dimethyl-2-imidazolidinone was prepared via cyclization reaction and methylation.

以乙二胺、尿素、甲醛和甲酸为原料，经过环化和甲基化反应制得目标产物1，3-二甲基－2-咪唑啉酮(1，3-DMI)。

By laser cladding,the sealing face of the in outlet valve parts in methylamine pump in urea production line has been strengthened.

采用激光熔覆技术对尿素生产线上的甲胺泵进排液阀零件密封面进行强化。

9H2O compounds as raw materials, urea as mineralizer.

采用水热法以乙酸锌和硫化钠为原料，尿素为矿化剂制备ZnS纳米粒子。

Is a kind of organic matter, is the molecular formula C3H6N6, micro-soluble in water, there are flame-retardant properties, a large part of the production of raw materials is urea.

是一种有机物，分子式是C3H6N6，微溶于水，有阻燃的特性，生产原料有很大一部分是尿素。

Methods The effect of factors such as reaction temperature, pH, formaldehyde-urea moleratio, contents of PVA and melamine upon the viscosity of the MUF resin, stability, water resistance and the quality of MUF resin.

方法反应温度、pH值、甲醛尿素摩尔比、PVA的用量、三聚氰胺的用量等对脲醛树脂胶液的粘度、稳定性、耐水性、胶合质量的影响。

Two kinds of MUF resin were chosen, which are sequential-type melamine-urea-formaldehyde MUF resin formulations where the sequence of addition of chemicals followed well-defined species reactivity principles.

文中MUF树脂选用了两种典型树脂，分别是连续型MUF1树脂和非连续型MUF2树脂。

The lignite with organic matter is applied in granular compound fertilizer production, together with urea, monoammonium phosphate, muriate of potash, single superphosphate and ammonium bicarbonate raw materials, by a pan granulator.

褐煤提供有机质，以尿素、磷酸一铵、氯化钾、过磷酸钙、碳酸氢铵为无机原料，用盘式造粒机生产粒状有机-无机复混肥。

The product process of organic-inorganic compound fertilizer whose organic matter come from the dejecta of beast and inorganic raw material come from urea, monoammonium phosphate, muriate of potash, single superphosphate, ammonium bicarbonate, and by a pan granulator is introduced.

介绍了利用畜禽粪便提供有机质，以尿素、酸一铵、化钾、磷酸钙为无机原料，用圆盘式造粒机生产粒状有机无机复混肥。

The lignite with organic matter is applied in granular compound fertilizer product , together with urea, monoammonium phosphate, muriate of potash, single superphosphate and ammonium bicarbonate raw materials, by a pan granulator.

褐煤 提供有机质，以尿素、酸一铵、化钾、磷酸钙、酸氢铵为无机原料，用盘式造粒机生产粒状有机无机复混肥。

The production process of organic -inorganic compound fertilizer whose organic matter come from the dejecta of beast and inorganic raw material come from urea, monoammonium phosphate, muriate of potash, single superphosphate, ammonium bicarbonate, and by a pan granulator is introduced.

介绍了利用畜禽粪便提供有机质，以尿素、酸一铵、化钾、磷酸钙为无机原料，用圆盘式造粒机生产粒状有机无机复混肥。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。