It is quite natural to write XPath expressions like/ html/ head/ title, but such expressions return an empty node set, because the input document contains no elements like title. 比较常见的情况是编写/html/head/title这样的XPath表达式,但是这类表达式会返回一个空的节点集,因为输入文档不会包含title这样的元素。
When people seek solace and natural beauty, they head to the hills not the harbour. 当人们寻求慰藉或想欣赏自然美景时,他们会前往山区,而不是港口。
First, natural, healthy aging takes its toll on head and neck anatomy and physiologic and neural mechanisms underpinning swallowing function. 首先,随着年龄的增长与吞咽功能相关的头部和颈部的解剖、生理以及神经功能发生退化。
In the longer term, it will be natural for Chinese investors to want to have investments in Taiwan, said Peter Sutton, head of research at CLSA in Taipei. 在更长的时期内,中国大陆投资者会自然地想要在台湾进行投资,里昂证券(CLSA)驻台北的研究主管苏廷瀚(PeterSutton)表示。
China is set to enhance exploration efforts, build gas reserves and increase natural imports to meet the goal, said Wu Yin, deputy head of the NEA, earlier this year. The 4 per cent level is low compared with the 24.1 per cent average globally. 中国将加强勘探努力、建立天然气储备并扩大天然气进口,以实现该目标,中国国家能源局(NEA)副局长吴吟今年早些时候表示,相对于24.1%的全球平均水平,中国4%的比重较低。
It has the natural advantage of a Renminbi deposit base, well-established trade links with China and a head start in developing renminbi financial products. 在吸收人民币存款、与内地建立成熟的贸易联系方面,香港都具有天然的优势,而且在开发人民币金融产品方面也走在前面。
Evaluation of True Horizontal Plane as Reference Planes under Natural Head Position 自然头位下真性水平面作参考平面的准确性评价
A check valve ( 3) can prevent the natural chemical absorption water head of the water head when the manual pump or the mechanical pump stops to work. 止回阀(3)起当手压或机械泵停止工作时能阻止水位差的自然吸药。
Any natural gas intensive industry basically has no future in Europe, said Seth Kleinman, head of energy strategy at Citi. 花旗能源业策略主管塞思克兰曼(SethKleinman)说:基本上,欧洲任何天然气密集型行业都没有未来。
The desk board can adjusts the angles, the lumber and cervical restore the natural state, the head of natural elevation, and assist the working and recline body to reading. 桌板可调整角度,使腰颈椎自然挺直,头部自然抬高,协助伏案或后仰身躯进行读写。
I try to sound natural, like a light bulb went off in my head in the middle of our conversation. 我尽量让我的话听来很自然,就好像是我们谈话时我的大脑突然“断电”了。
The analysis based on lateral cephalometric radiographs in natural head position could make the diagnosis of malocclusion more reasonable. 对自然头位下头颅侧位片的分析可以使对错邪畸形患者的诊断分析更为全面。
The rider maintains a light, soft and steady contact with the mouth, allowing the natural movement of the head and neck. 骑手通过缰与马嘴保持轻柔而且稳定的接触,允许马的头与颈自然的移动。
Objective: To study the relationship between malocclusion and diagnosis of Cephalometric analysis in natural head posture, between SN and three malocclusion. 目的:研究在自然头位下头影测量分析诊断与错牙合畸形的关系,前颅底平面(SN)与Ⅲ类畸形的关系。
Natural bank classifying method of the middle and low water head runoff hydropower station reservoirs of Guangxi 广西中低水头径流电站水库天然岸坡分类方法初探
49 Cases Cephalometric Analysis in Natural Head Posture 自然头位下X线头影测量49例分析
This device could work as long as natural water head is more than 0.1M. 此装置只要0.1m以上的自然水头就可过滤。
Clinical study on application of air sac obstetric apparatus ( ASOA) in natural vaginal labor: Analyses of 120 cases of abnormal position of fetal head and 60 cases of breech presentation 气囊助产对提高阴道分娩质量的临床研究&附胎头位置异常120例及臀位60例分析
The operation performance of a spark ignition natural gas engine with two cylinders, including dynamometer card in cylinders, intake pressure liquid, air fuel ratio, temperature field of cylinder head and piston, and emission, is tested. 对一台火花点火式两缸天然气发动机进行了缸内示功图、进气压力波、空燃比、缸盖及活塞温度场和排放等项目的测试。
The correlation between morphological variables and natural head posture 自然头位与X线头影分析法主要变量的相关性研究
This paper analyzes the artificial and natural reasons of dry damage, talks about the countermeasure of water resource management, construction of water head project, construction of soil grass reservoirs, spread of saving water irrigation, carry out artificial rainfall. 本文分析了旱灾的自然和人为六种成因,探讨出加强水资源管理、建设水源工程、建立土壤水库和林草水库、推广节水灌溉、实施人工增雨等八种抗旱措施。
Conclusion: Natural head posture is correlated to craniofacial morphology which is quite related to the pharyngeal airway. 结论:颈椎姿势与咽腔气道,以及与咽腔气道形态和位置有密切关系的颌骨位置呈较明显的相关性,颌面形态通过改变咽腔气道的位置及形态而与一定的颈椎姿势相联系。
Objective: To compare the difference of NHP ( natural head posture) and spinal position between UCLP and mal-occlusions. 目的:比较UCLP患者与无唇腭裂的错(牙合)患者头位、颈椎位置的差异。
Through imitating natural reading by translating a symbol string relative to sightline, we found that the head and the end symbol of a string did evoke exogenous components but quasi persistently presented symbols among a symbol string did not. 通过让符号串相对于视线移动来模拟自然阅读,发现了字符串中的串首和串尾符号会诱发出外源性成分,但串中的准持续呈现字符不会诱发外源性成分。
A Cephalometric Study of Natural Head Position and Spinal Position in UCLP Subjects UCLP患者头位、颈椎位置的头影测量研究
According to the generation mechanism of cascade hydropower stations, the thesis looks for the relationship between natural inflow, hydropower station capacity, power head and other parameters, establishes the power cogeneration model of cascade hydropower stations. 根据梯级水电站的发电机理,寻找自然来水量、水电站库容、发电水头等参数之间的关系,建立梯级水电站群联合发电模型。
When natural gas reservoir is broached, gas hydrate is easy to assemble on throttle fill up line, marine riser, blowout preventer and well head in sea floor etc., which bring great affection to petroleum exploration drilling in deep water. 在深水油气钻探过程中,节流压井管线、隔水管、防喷器及海底井口等部位在钻遇天然气层后均易聚集天然气水合物,给深水油气钻探开发安全带来不利影响。
The lock is ship pass building which overcome the centralized water level difference formed by dam building ( or natural) on the river. The lock consists of head bay, trial bay, gates and lock chamber. 船闸是克服河流上建坝(或天然)形成的集中水位差的一种过船建筑物,它由上下闸首、闸门、闸室等组成。
Not all the feature extraction methods can be used in head pose estimation because the difference of natural property of head and the influence of the circumstance while image sampling. 由于人头部自然属性的差异以及采样时环境的影响,使得不是所有的特征都适用于估计头部姿态。