长时间

The ASCA observation on NGC 4151 in 1995 provided us Fe K line profile with unprecedented good data quality.

1995年ASCA对NGC 4151的长时间观测得到了高质量的铁线轮廓。

Chen Feng Furniture Co., Ltd. is currently the chair plate office network of professional manufacturers, the product has a number of national patents.; ASCENDENT Net±plate designed according to ergonomics, by hollowing out a unique style of production processes, products with good permeability , comfort, style, safety and health, and settled in the prolonged use of Net±easy deformation, defects such as loosening.

晨丰家具有限公司是目前国内板式办公网椅的专业厂家，产品拥有多项国家专利。；ASCENDENT板式网背椅依人体工学而设计，通过独特挖空式工艺生产，产品具有良好的通透性、舒适性、时尚性、安全性及健康性，解决了网背椅于长时间使用容易变形、松动等缺陷。

Ask him to do eye-exercises after studying, and it is good for his eyes.

长时间的学习也会引起眼睛疲劳。

After a long period of preparation, Manstein finally decided he could take major action again. On 8 May 1942, he launched Operation Trappenjagd, which called for General Maximilian For-Pico's XXX Corps to attack the Russian 44th Army on the southern coast. The operation launched at 0415 that morning with a 10-minute artillery barrage. By 0730, the Russian front line troops were completely smashed at the pressure of German frontal attacks and the small landing by the 902nd Assault Boat Command and the 436th Infantry Regiment behind their lines.

经过长时间的筹备，曼斯坦因终于决定他要再次发动一次重大行动。1942年5月8日，他发起了猎鸨行动，下令马克西米里安(Maximilian For-Pico)将军的第30兵团进攻南部海岸的苏军第44军。5月8日早上4点15分德军开始的10分钟炮击宣告了行动开始。7点30分，德军902冲锋舟连与436步兵营在苏军防线后方进行了一次小规模登陆，他们同正面德军的强大攻势一起，彻底瓦解了苏军的防线。

"I dare not positively assert it, as he has been lost for so long a time."

"我不敢十分确定，因为他已经失踪了这么长时间了。"

The assortment of so many letters would take a long time.

把这么多的信件归类需要很长时间。

How long does it take to change engine from ahead to astern?

从前进到后退的转换需要花费多长时间？

Results: To handle VDT for a long time can bring obvious asthenopia, some changes may appear on cornea and lens, the cause is due to several factors.

结果 ：长时间操作VDT会出现明显的视疲劳，角膜和晶状体也可能出现某些改变。其原因为多因素所致。

She looked at the box for a long time, and then her eyes opened wide in astonishment.

她看了那个匣子很长时间，然后她的眼睛充满惊讶地睁大了。

I recommend Canon EOS DSLR cameras for long-exposure astrophotography because of their proven performance, low noise and ease of use in working with true raw files.

我推荐佳能EOS数码单反用于长时间曝光的天文摄影，因为它们已被验证的表现，低噪声与真正RAW文件（注：这点是针对尼康的RAW做了手脚来说的）的易用性。

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。