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Marine δ13C may have varied in the Neoproterozoic, but this could only be deduced following careful consideration of large isotopic changes that occur during lithification and later alteration.

大量的进行光合作用的生物曾经广泛出现并且制造了足够的光合作用碳，这些碳同位素后来进入了海岸地下水并且沉积形成了具有独特碳同位素特征的海相碳酸盐。

Rather than indicating C isotope excursions, the Neoproterozoic data seem to represent normal isotope variations that occur during lithification and metamorphism.

这些新元古代样品的数据显示了碳同位素的漂移，但与此同时更表明在成岩和变质作用过程中普通同位素的变化。

As observed in the Pleistocene, thick intervals of negative δ13C values occur in the Neoproterozoic but are considered to record profound perturbations to the global marine carbon cycle unique to the Neoproterozoic rather than being considered in terms of normal mixed meteoric/marine lithification or decarboxylation.

更新世的观察表明，新元古代存在着一个较长时期的δ13C负值，这些负值记录了全球海洋碳同位素的波动循环是新元古代独有的，而并非通常意义下的大气海洋水混合产生的岩化作用和脱羧基作用。

Storage battery is emergency power supply of DC operation electrical source system in electrical power system, whose good work state, is great important to operation of fixture. Because individual storage battery quickly abates due to dry, heat, polar plate lithification, weeping, lack charging, excessive discharging, internal resistance increasing, capability reduction, explosion etc., heavy accident of electric network impossible occur.

蓄电池是电力系统直流操作电源系统的后备电源，它的工作状态好坏，对于设备的运行至关重要，由于运行中个别蓄电池会因干涸发热、极板岩化、漏液、欠充、过放、内阻增大、容量降低、爆炸等原因而迅速失效，极有可能造成电网的重大事故。

The central plains area of 603.25 square kilometers, accounting for a total area of the county's 60.4 percent, Jingshan railway north of the ground at an altitude of 50 meters height above the hills locally exposed, relatively flat terrain, the ground elevation Jingshan railway generally south of 30 -50 m, because of wind and rivers, sand dunes occur more frequently valley.

中部平原区面积603.25平方公里，占全县总面积的60.4%，京山铁路以北，地面高程在海拔50米以上，局部有山丘出露，地势较为平坦，京山铁路以南地面高程一般在30—50米，由于受风沙影响及河流切割，沙丘沟谷出现较多。

Can occur if you try to calculate the square root or logarithm of a negative number.

如果你试着计算否定数目的正直根或对数，能发生。

Though low-speed streaks occur randomly in time and space, the streak spacing exhibits a lognormal probability distribution.

低速条带的合并和猝发，是导致条带数量减少，〓随y〓增大的重要原因。

Therefore, it is very difficult for routing loops to occur.

因此，很难有路由回圈发生。

This could occur as a result of some structural instability or looseness in the shell.

当外壳产生某些结构不稳定或松动时，就能产生这种情况。

In the work, the lower bound to occur between the unpleasant things, have some friction and collision, conflict.

在工作中，上下级之间难免发生一些不愉快的事情，产生一些摩擦和碰撞，引起冲突。

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。