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A gray lustrous metallic element of the rare earth group; is used in special alloys; occurs in monazite and bastnasite.

一种有光泽的灰色金属元素，稀土属，用于特殊合金中，见于氟碳锑矿或独居石中。

A metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite.

稀土属金属元素，用于激光中，见于磷灰石、独居石、磷钇矿和硅铍钇矿中。

A yellow trivalent metallic element of the rare earth group; occurs in monazite and bastnasite in association with cerium and lanthanum and praseodymium .

一种稀土属黄色多价元素，与铈、镧、镨共生于独居石和氟碳锑矿中。

The structure is a nose-shape monocline that descents toward the center of hydrocarbon occurring from the northwest to southeast. The distribution of oil and water in the Zhaowa-Anpeng Oilfield is relatively complex. There is deep-basin oil pool that the oil/water contact occurs at the updip end of the accumulation in the horizontal continuous reservoir. It is a tight-sandstone oil pool, the reservoir has a low permeance, and the formational pressure is lower than normal.

构造呈现单斜背景上的鼻状，自西北向东南生油中心倾没；赵凹安棚油田深层系内油水分布较为复杂，在横向连续储层内，出现了油水关系倒置的深盆油；储层属非均质低渗透储层；从深盆油观点看，属一种动态致密砂岩油藏；地层压力异常低，甚至负异常压力。

However, Santoro said low testosterone causes infertility only if it is very low or occurs in morbidly obese men.

不过，Santoro说，睾酮水平低导致不育只出现在水平极低或病态性肥胖的男子中。

And so on one minute, this to us is very short time, possibly occurs the matter can mortifying life-long.

等一分钟，这个对我们来说是一个很短的时间，可能发生的事情会让人悔恨终生。

Soybean mosaic virusis a worldwide disease and occurs in different regions of China, resulting in the loss of yield and seed-quality.

大豆花叶病毒病是世界性病害，在我国东北大豆主产区普遍发生，严重影响大豆的品质和产量。

Chromosomal mosaicism occurs in some embryos and can be demonstrated in the placenta on chorionic villus sampling.

染色体镶嵌性见于某些胚胎并可在胎盘中的绒毛膜标本上被显示。

Chromosomal mosaicism occurs in some embryos and can be demo trated in the placenta on chorionic villus sampling.

染色体镶嵌性见于某些胚胎并可在胎盘中的绒毛膜标本上被显示。

The processing method has been taken when breakdown of vacuum switch permanent magnetism straight line motor-driven system occurs.

文章的最后对设计的驱动机构的优缺点进行了一定深度的总结，得出了一些结论。

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。