瓶颈

As restricted by tunnel clearance, transportation vehicles size and safety distance, only single-orbit transportation can be used in construction of small section shield tunnel.

小断面盾构隧道施工，因受隧道净空、运输车辆尺寸以及安全间距等方面的限制，只能采用单线轨道运输方式，随着隧道的不断延长，洞内运输时间成为制约施工进度的瓶颈。

Especially under global environment of fuel shortage,coal wharf is an important resource the supply of which lags behind the demand,therefore,the coal wharf is always the bottle-neck of coal transportation.

特别是在全球能源紧缺的社会环境下，煤炭港口作为重要资源，往往成为煤炭运输的瓶颈。

The time of the most recent common ancestor of the current reed parrotbill populations was about 18000 years before present, according to the genetic variation of the haplotypes. This indicated that the reed parrotbill may has suffered a severe bottleneck effect during the last glaciation.

根据线粒体DNA控制区单元型的变异，推测震旦鸦雀指名亚种4个现生种群最近共祖时间约在1.8万年前，震旦鸦雀种群在末次冰期可能经历了一次强烈的种群瓶颈过程。

At last,the closed contour curve of treatment region of mode B ultrasonic monitoring image is obtained by morphology post-processing.The results show that the size of treatment region can be detected better from mode B...

结果证明：该方法克服了传统图像分割方法阈值难以确定的瓶颈，能够更好地从B超图像中检测出HIFU治疗区域的大小。

On the back label was a hand-printed date of when the wine was 'disgorged,' when the sediment in the neck of a bottle of bubbly was removed and the temporary cap replaced by a real cork.

标签背面是手写的日期，标明酒是何时&酵母溶解&的、香槟酒的瓶颈处的沉淀物是何时被去除的以及真正的软木塞是何时替代了临时瓶盖。

Through the analysis of energy and exergy,the bottleneck of the traditional process for ester acetates ' production is revealed.

通过传统液相酯化法醋酸酯生产工艺过程的能量分析和火用分析，指出醋酸酯生产工艺高能耗、高物耗的瓶颈，挖掘过程节能降耗的潜力。

Because of the enlargement of the network size, the weakness of SNMP mechanism of management is fully exposed . SNMP is built up by a kind of plane type network management, the administrator is apt to become the bottleneck.Too many polls and wide distributed agent increase the expense of the network bandwidth, decrease the efficency of the network. the management information that the administrator obtained from each acts as agenting is initial data. Not only quantity is great but also needs finish machining to turn into valuable management and lay particular stress on.

SNMP是一种平面型网管架构，一方面轮询数目太多、分布较广的代理使带宽开销过大，效率下降，另一方面管理者从各代理获取的管理信息是原始数据，不但量大而且需要精加工才能变为有价值的管理信息，从而使得管理者容易成为瓶颈。

Labelling data is dull and requires experienced annotators to label them with plenty of time and special device.This is so-called bottle-neck of annotation.At the same time,unlabelled data are easy to obtain and can be used in diverse ways.

大量实验表明，该方法明显减小了训练集的数据量，从而降低了算法的时空消耗，改进了分类器的性能。3、半监督的文本分类传统的分类器仅使用有标签的数据进行训练，然而，有标签的实例通常因昂贵、耗时而难以获得，从而造成标注瓶颈问题。

This enriched and developed the basic thought of numerical theory, resolved the bottleneck problem that astricts the development of numerical value analysis method, open up a new field for the geomechanic engineering application of 3-D network and numerical value analysis method, it's an available and essential attempt, it's also a necessary trend of numeric times development.

10通过岩体三维节理网络模拟，建立岩体结构的概化模型，基于数值法对岩体进行大量的&数值模拟试验&，获取岩体变形参数，丰富并拓展了数值模拟理论的基本思想，解决了选择岩体参数这一束缚数值分析方法发展的瓶颈问题，为数值分析方法和三维节理网络在岩土工程实践中的应用拓展了一片新的天地，是一种有益而且非常必要的尝试，也是数字时代发展的必然趋势，具有一定的理论意义和应用价值。

Think of the information bottlenecks in the form of backlogs on their desks, or the hundreds of unanswered email in their inboxes.

认为信息瓶颈以积压的形式在他们的书桌上，或上百未回答的电子邮件在他们的inboxes 。

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。