长时间

Through the analysis of present status and existing problems of barium hydroxide production,the four measures for the production of barium hydroxide from witherite by hydrolysis method are put forward.

通过中国现有氢氧化钡生产现状及存在问题分析，对采用毒重石水解法生产氢氧化钡工艺提出了4项措施：增加毒重石矿选矿工艺，寻找新的毒重石矿源以提高品位，长时间研究确定生产工艺，开发氢氧化钡新的生产工艺线路。

He will not be behind the bars for long.

他在监狱里呆不了多长时间。

People should look for a baseline that can work for a longer time.

人们应该寻找一种能够更长时间起作用的基准。

From six 8,8 cm guns, a sound locator (which took hours to adjust, Stone Age style) and a searchlight (which was more of a hindrance than a help), they expanded to a Mammut Batterie of three batteries, each with six 8,8 cm guns and with 20 mm and 37 mm anti-aircraft guns and radar.

他的部队从最初拥有6门88mm高炮，一个听音器（需要花很长时间调整，石器时代的产物）及一台探照灯的连队被扩充成拥有3个连的营级部队，每个连都有6门88炮及一些20mm、37mm高炮以及雷达。

You worked with bauer for a long time, didn't you?

你和小包共事很长时间了吧？

Evan Bayh and gubernatorial candidate Jill Long Thompson, are also expected to attend.

唉， 谢谢你了老麦肯，也辛辛苦苦为国家工作了那么长时间。

"Mandatory property management must be combined with good service in order to survive a long time."

"强制性物业管理必须结合良好的服务才能生存了很长时间。"

The benefits to be derived from the old technique are not in doubt, but it will take too much time.

从旧的技术中得到好处是不容怀疑的，但是却要花很长时间。

It's the answer that led those who've been told for so long by so m-a-n-y to be cynical and fearful and doubtful about what we can achieve to put their hands on the arc of history and bend it once more toward the hope of a better day.

它的答案，导致这些谁一直在说这么长时间这么多的是玩世不恭和恐惧和怀疑是我们能够实现把他们手中的弧的历史和弯曲再次向希望一个更美好的一天。

T's the answer that led those who've been told for so long by so many to be cynical and fearful and doubtful about what we can achieve to put their hands on the arc of history and bend it once more toward the hope of a better day.

它的答案，导致这些谁一直在说这么长时间这么多的是玩世不恭和恐惧和怀疑是我们能够实现把他们手中的弧的历史和弯曲再次向希望一个更美好的一天。

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。