查询词典 ions

Critics say the policy has led to forced a bort ions and a dangerously imbalanced sex ratio due to a traditional preference for male heirs, which has prompted countless families to a bort female fetuses in hopes of getting boys.

批评人士认为，计划生育政策使很多具有"重男轻女"传统思想的家庭进行了选择性人工堕胎，由此造成了我国男女比例的严重失调。

The results showed that the lesion of X-rays oncells displayed gradually attenuation with depth (or cellsurvival fraction displayed gradually increase with depth)while the lesion of heavy ions on cells followed Bragg curve(or cell survival fraction was inverse Bragg cueve).(2)Thedynamic change of micronuclei and cell survival inhepatoma SMMC-7721 irradiated by 25MeV/u〓 wasstudied.

采用HeLa、B16两种细胞分别研究了X-射线和重离子在水介质中入射的深度与相应细胞的存活率（1-失活率），结果表明：X-射线对细胞的损伤随深度而逐渐衰减（或细胞存活随深度逐渐增加），而重离子对细胞的损伤则为Bragg曲线（或细胞存活为倒Bragg曲线）。

Larval fish can exchange ions through their skin, and early fish likely used rudimentary gill structures known as branchial baskets.

鱼苗能通过皮肤进行离子交换，而早期的鱼使用原始的鱼鳍结构——气管鳃篓。

The effect of backstreaming ions on bremsstrahlung target on focus of electron beams.

轫致辐射转换靶靶面回流离子对电子束聚焦的影响。

RD results showed that the silver ions doping could inhibit the formation of brookite TiO〓 to some extent.

PS研究表明，银离子掺杂前后，催化活性的变化与其表面的低价钛离子缺陷的浓度变化密切相关。

However, silver ions not only promoted the formation of brookite phase but also reduced the phase transformation temperature of anatase to rutile.

同时，Ag+离子的掺杂不仅促进了钣钛矿的形成，并且降低了锐钛矿向金红石相的转变温度。

The capillary burette micro titration in counting drops is employed to determine iodine ions in the mixed halide solution.

采用毛细滴管数滴微型滴定法测定混合卤化物中的碘离子。

This invention discloses a new technology for preparing rear earth ionic doped fiber prefabricated rods with DC-RTA technology in a sol-gel method including preparing sol containing necessary doped ions, coating said sol uniformly on the inner wall of the quartz glass tube and burning it under high temperature to coagulate and vitrify them to a doped layer and repeating the above process to form a fiber prefabricated rod by oxygen and hydrogen flame after the doped layer reaches to a designed thickness and the fiber prefabricated rod can be made to various rare earth ionic doped fibers by an ordinary drawbench technology.

本发明属于光纤制造和光纤激光技术领域，具体公开了一种利用溶胶凝胶方法中的DC-RTA技术制备稀土离子掺杂光纤预制棒的新工艺。该工艺步骤包括预先配制好含有所需掺杂离子的溶胶，将该溶胶均匀涂覆在石英玻璃管的内壁后高温灼烧，使之凝结并玻璃化为一层掺杂层。反复上述涂覆灼烧过程，在掺杂层达到设计厚度后由氢氧焰高温收棒形成光纤预制棒。该方法所得到的光纤预制棒可以通过普通拉丝工艺拉制成各类稀土离子掺杂光纤。

And the accurate masses of the product ions of butanone and propenol resulting from the ion/molecule reactions were obtained.

另外 ，把该类化合物(30个)SCI反应的质谱图与NIST98库中的标准EI质谱图进行了比较，建立了SCI质谱图库，提高了在离子阱质谱上对这类小分子化合物定性分析的准确率。

The results showed that different concentrations of cadmium ions affect differently the growth and activity of the bacteria.

研究表明：不同浓度的镉离子对细菌的生长和活性起不同的作用。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。