它们体积细小，细胞质浓，细胞核大，无大液胞，细胞壁薄，具有较多粒线体和核糖体，能不断进行细胞分裂。

They are usually small, with dense protoplasm, large central nucleus and few vacuoles. Their cell walls are thin and without secondary deposits. They have large Numbers of mitochondria and ribosomes.

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Again, in an electric field line splitting observed, the intensity of the line splitting varying with the intensity of the applied electric field.

结果也证明谱线在电场中也会分裂，而且其分裂程度,随电场强度变化而变化。

麻省理工公开课 - 固态化学导论课程节选

And, furthermore, that the intensity of the splitting was proportional to the intensity of the applied magnetic field.

并且谱线的分裂程度,和实验中所使用的磁场强度,是成比例的。

麻省理工公开课 - 固态化学导论课程节选

Again, the Bohr model silent about these splitting into multiple levels.

对谱线分裂成多条这一现象,波尔又一次沉默了。

麻省理工公开课 - 固态化学导论课程节选