External thread on lens barrel is matched and locked to internal thread on the lens seat.

1、

Nuts have internal ( or female) threads to match those of the Bolt.

螺母上有内（或阴）螺纹，与螺栓上的螺纹相啮合。

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2、

Three dimensional FE simulation of ball spinning of inner grooved copper tubes

两端带阴螺纹管接的直通旋塞内螺纹铜管滚珠旋压三维有限元模拟

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3、

The isolation procedure included ammonium sulfate fractionation and chromatography on DEAE-cellulose.

分离操作包括硫酸铵沉淀，DEAE-纤维素和CM-纤维素层析。

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4、

A Study of DEAE Ion Exchange Chromatography for the Purification of Hen's Yolk IgG

用离子交换层析法纯化鸡蛋黄IgG

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5、

Conclusion The prepared magnetic nanoparticles coupled with DEAE can be used to purify high purity plasmids.

结论在纳米磁性粒子外包裹上DEAE基团，可以提纯出高纯度的质粒。

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6、

Phase-separated polymerization ( ii) synthesis of functional microspheres with DEAE group

相分离聚合法：（Ⅱ）二乙氨基乙基型共聚功能微球的合成

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7、

Concentrated ( C) was separated by DEAE-cellulose chromatography column.

C液经DEAE&纤维素柱层析分离，其峰Ⅱ为电泳纯胰高血糖素（D）。

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8、

IgG was isolated from human serum by DEAE-Cellulose ion exchange chromatography.

用DEAE-纤维素离子交换柱色谱法从人血清中能分离出IgG。

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9、

Methods: The polysaccharide was got by the extraction, DEAE chromatography etc.

方法：依次用水提取、过滤、去蛋白、DEAE纤维素层析、冷冻干燥获得大蒜多糖；

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10、

Unmated male, female moths, mating female moths on the choice of 10 fractions of coefficients were 28.06%, 25.56%, 29.44%, and 11 are very similar fractions.

未交配的雄、雌蛾、交配过的雌蛾对组分10的选择系数分别为28.06%、25.56%、29.44%，与组分11非常相似。

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11、

The study proves that there is a gender difference between male and female in their choice of the complimented topics and CR strategies, and female show high frequencies of addressing compliments.

研究表明，男性和女性在称赞语的使用、话题的选择及应答方式上都存在差异。与男性相比，女性使用称赞语的频率更高。

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12、

Female mate choice co evolved with trait exaggeration or females that are choosy gain direct benefits.

性别间选择促使用来吸引异性的一些特征得到发展。雌性动物的配偶选择或与所选择的特征协同进化，或可以从选择中得到直接的利益。

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13、

selective proceptivity, mate choice, female choice, sexual choice.

选择性感知，配偶选择，雌性选择，性选择。

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14、

The morphological characters and female mate choice of tiger frogs ( Rana rugulosa) during the breeding season

繁殖期虎纹蛙形态特征和雌性性选择

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15、

So it's not only remarkable to find that female fur seals are choosy, but this also suggests that female choice may be more widespread in nature than we previously thought.

研究不但发现了雌海狗在择偶时的主动性，也预示着自然界雌性动物在择偶时远比人们想象的积极。

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16、

Female Choice and Evolution of Male Songs in Birds

雌性选择与雄鸟鸣唱的进化

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17、

Indeed, so many female employees made this choice that they were collectively dubbed "the rush-to-get-pregnant tribe".

因为有很多女性员工选择快速怀孕，所以就出现了一个新的群体，被称为“闪孕族”。

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18、

But the conformation of P ( DEAM co MAA) in dilute aqueous solution shows a loose extended form due to polymer dilution effect in all of pH range when the molar fraction of DEAM in P ( DEAM co MAA) is higher than 8.00%.

当共聚物中DEAM含量大于8.00%（molarfraction）时，由于高分子的稀释效应，P（DEAM-co-MAA）在pH2～10范围内表现为较为松散的伸展构象。

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19、

The effect of DEAM contents and pH on the conformation of P ( DEAM co MAA) may find some uses in the design and synthesis of novel sensitive gels.

P（DEAM-co-MAA）构象随其组成和pH变化的这种性质有可能在新型敏感性凝胶的合成设计上获得应用。

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20、

How ofen do we plant the seed of a beautiful deam in the fertile soil of our minds, and then dig it up?

我们在心灵的沃土中，播下一颗美好梦想的种子后。是不是不待它生根发芽就将它掘出土壤？这样的事情每隔多长时间我们就会做一次呢？

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