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Fern species are usually distinguished by their leaf shapes, venations, scales, sporangia, and indusium, etc.

蕨类又分为真蕨和拟蕨两类；前者孢子囊生长在叶片，包括一般常见的蕨类；后者的孢子囊长在茎干上，包括其他石松科、卷柏科、水韭科及木贼科。

The most widely accepted version of the Way of Negation has it that abstract objects are distinguished by their causal inefficacy.

否定的方法，最宽泛被接受的版本，是诉诸'因果上无力'来区分。

A kingbird that breeds in North American and winters in tropical America; distinguished by a white band on the tip of the tail.

在北美繁殖、在美国热带过冬的食蜂鹟；以尾巴尖有白带而名贵。

The results showed that there was difference with the cell lines in growth and size, the chromosome analysis revealed typical characterization of Lepidopteran chromosome therefore two cell lines can' t be distinguished by analysis of character of the morphology and chromosome.

二者在形态上有一定的差异，而且细胞大小不同，生长速度也有一定的差异，两株细胞系的染色体符合鳞翅目昆虫染色体的典型特征，从染色体形态和数量上不能区分两种细胞系。

Lude, France's "La Marseillaise" and the Karl's "Dance" are distinguished by mid-century romantic sculptures .19 realistic art thrive period of time.

法国吕德的《马赛曲》和卡尔波的《舞蹈》都是杰出的浪漫主义雕塑作品。19世纪中期是现实主义美术蓬勃兴旺的时期。

Dichanthium is closely related to Bothriochloa , but can be distinguished by its pedicels and rachis internodes being solid and lacking a median, purple line.

Dichanthium与Bothriochloa密切相关，但是可以通过它的花梗和轴节间的固体并且缺乏一条中间，紫色的线被区分。

Two sibling species, Anopheles minimus A and C,found in southern China,can be distinguished by the PCR-ASA method established in this study.

结论我们建立的ASA分子鉴别方法能有效地将我国微小按蚊不同亲缘种A和C区分开来。

These conditions are distinguished by the presence of clinical and electrical myotonia and a delay in muscle relaxation after contraction because of prolonged excitation of the muscle membrane.

肌强直综合征可以通过以下表现加以鉴别：临床检查及电生理检测军发现肌强直、因肌膜兴奋性延长所致的肌肉收缩后松弛延时缓慢。

Type genus of the Culicidae: widespread genus of mosquitoes distinguished by holding the body parallel to the resting surface.

库蚊科的模式属；分布广泛的蚊类的一属，以保持其身体与水面平行为特征。

These three groups were also distinguished by their economic systems: pastoralism in Yanqing and agriculture in Taosi and Shangma.

在组间差别上，上马组的磨耗速率似略快于其他两组。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。