- 更多网络例句与长颈烧瓶相关的网络例句 [注：此内容来源于网络，仅供参考]
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The preparation method comprises the following steps in sequence:(1) metric acetonitrile is added into a dual-bottleneck distilling flask that is provided with a refluxing and condensing tube, and simultaneously, long-chain dialkyl methyl tertiary amine and relevant saturated dihalide are added thereof;(2) nitrogen is pumped for 10 to 20 minutes for deoxidizing;(3) a magnetic mixing reaction is carried through for 10 to 15 hours under the condition of 78 to 83 DEG C.
其制备方法依次包括以下步骤：(1)在装有回流冷凝管的二颈蒸流烧瓶中，加入计量的乙腈，同时按一定比例加入二长链烷基甲基叔胺与相应的二卤代烷；(2)通氮气10-20分钟，排除氧气；(3)在78-83℃条件下磁力搅拌反应10～15h。
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A vial or round long-necked vessel for laboratory use.
烧瓶实验用的一种小瓶或长颈容器
- 更多网络解释与长颈烧瓶相关的网络解释 [注：此内容来源于网络，仅供参考]
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bolthead：螺钉的头 长颈烧瓶 (枪)机头
bolter | 退出党派者, 常脱缰的马, 筛面粉的机器 | bolthead | 螺钉的头 长颈烧瓶 (枪)机头 | bolthole circle | 螺栓孔分布圆
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bolthole circle：螺栓孔分布圆
bolthead | 螺钉的头 长颈烧瓶 (枪)机头 | bolthole circle | 螺栓孔分布圆 | bolthole | 能躲避危险的地方
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foam encasement：泡沫塑料外套
27 flask shield烧瓶屏罩 | 28 foam encasement泡沫塑料外套 | 29 round-bottom boiling flask圆底长颈烧瓶
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ground glass socket：磨砂玻璃插口
29 round-bottom boiling flask圆底长颈烧瓶 | 30 ground glass socket磨砂玻璃插口 | 31 ground glass cone磨砂玻璃锥
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kjeldahl flask：长颈烧瓶;凯氏定氮瓶
kjeldahl determination觊氏测(定)氮法 | Kjeldahl flask长颈烧瓶;凯氏定氮瓶 | Kjeldahl method凯氏(定氮)法
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slotted core：开槽铁心
nitrating centrifuge 硝化离心机 | slotted core 开槽铁心 | boiling flask 长颈烧瓶
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fiddle head：船头的装饰,船首饰,小提琴头
femur 大腿骨 | fiddle head 船头的装饰,船首饰,小提琴头 | flask 长颈瓶,烧瓶
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fiddle head：船头的装饰,船首饰
Fern 蕨类植物的叶子 | Fiddle head 船头的装饰,船首饰 | Flask 长颈瓶,烧瓶
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round-bottomed flask with long neck：长颈圆底烧瓶
round-bar iron 圆钢 | round-bottomed flask with long neck 长颈圆底烧瓶 | round-bowl soup spoon 圆形汤匙