A novel bi-pyridine quaternary ammonium salt cationic surfactants was prepared by acrylic modified rosin.

  • 普通松香通过丙烯酸改性,与氯化亚砜、甲醛、吡啶合成新型吡啶双季铵盐阳离子表面活性剂.
  • 来源:互联网摘选更新时间:2025-01-19 09:31:54

  • 重点词汇
  • wasv. 用来表示某人或某物即主语本身,用来表示某人或某物属于某一群体或有某种性质( be的过去式 );在,存在;不受干扰;
  • aart. (用于可数名词或单数名词前,表示未曾提到的)一(人、事、物);用于前有形容词或后有短语的不可数名词前;一(个);每一(个);任一(个);
  • quaternaryn.四,四个一组;
  • byprep. 在…旁边;表示方式;由于;经过;到…之前;
  • rosinn.松香,树脂;
  • ammonium salt铵盐;
  • preparedadj.有所准备的;愿意的;事先做好的;
  • modifiedadj.改良的,改进的,修正的;
  • 相关例句
1、

The effects of different quaternary ammonium salts were studied.

研究了季铵盐的种类、结构对插层效果的影响.

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2、

It was pointed out that the quaternary ammonium salt was the most important phase transfer catalyst.

指出了此类合成反应中所采用的重要相转移催化剂是季铵盐类.

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3、

A quaternion can be used to represent any arbitrary rotation.

四元数可用来表现所有形式的旋转.

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4、

The norm of a quaternion is similar to that of a vector.

四元数的平均值与矢量的有点相似.

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5、

Two control laws are presented for attitude regulation of a rigid body expressed by quaternion.

给出了用四元数+表示的刚体姿态调节问题的两种控制规律.

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6、

Some inequalities of eigenvalues for weak cycle products of self-conjugate quaternion matrices are given.

给出了自共轭四元数矩阵的弱圈积的特征值的一些不等式.

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7、

In this paper, we obtain some inequalities for norm and traces of quaternion matrices.

本文获得了四元数矩阵的范数和迹的一些不等式,改进了近期的某些结果.

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8、

The method of adjusting screen-coordinate and object-coordinate of plane model with quaternion is discussed.

论述了以四元数法调整模型的屏幕坐标和物体坐标的方法.

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9、

It is realized by real quaternion overrides the weakness of matrix such as unintuitionistic, complex calculation.

此算法采用实四元数组实现,克服了采用矩阵实现时的非直观性 、 计算复杂等弱点.

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10、

Eight , design SAMPLE language grammar, semantic analyzer, the output quaternion type of intermediate results.

设计SAMPLE语言的语法 、 语义分析器, 输出四元式的中间结果.

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11、

Two control laws are presented for attitude regulation of a rigid body expressed by unit quaternion.

给出了用四元数表示的刚体姿态调节问题的两种控制规律.

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12、

Xiaoming likes Tang poetry very much , especially its quatrains.

小明喜欢读唐诗, 尤其是其中的绝句.

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13、

String Quartet No.30 in A major , Op. 93, Quatuor brillant.

大调第三十弦乐四重奏曲, 作品93, “灿烂四重奏曲”

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14、

To tremble quaver in sound , as of the voice or a musical note.

半音加两个符点, 时值等于三个四分音符或一个八分音符.

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15、

There was a quaver in Beryl's voice.

贝丽尔的声音有一丝颤抖.

《柯林斯高阶英汉双解学习词典》

16、

You could hear the quaver in her voice.

她的声音中能听出有些颤抖.

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17、

There was the quaver in her voice as she said this.

她这么说时,声音几乎没有颤抖.

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18、

I quaver when speaking to large audiences.

对许多人讲话时我便会发颤.

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19、

To tremble or quaver in sound , as of the voice or a musical note.

时间量是全音符一半的一个音乐符号.

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20、

There was the least quaver in her voice as she said this.

"她这么说时,声音几乎没有颤抖.

英汉文学 - 嘉莉妹妹

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