The key obstacle is pregnant women's lack of access to quality care before, during and after childbirth.
存在的主要障碍是，孕妇在分娩前、分娩中及分娩后不能获得高质量的保健服务。
But a key obstacle to reduce the amount of gas flared is the lack of infrastructure and available markets for the associated gas.
然而，减少天然气燃除的一个主要障碍是缺乏利用伴生气所需要的基础设施和现有市场。
The key obstacle to the agriculture laborers' melting into society is from the system, and the essential one is from the economy.
本文认为，影响农民工社会融入的关键是制度障碍和经济障碍。
The laser speckle interference measuring was integrated into college physics experiments, in which the key obstacle is the production of instrument of pulling-type loading.
将激光散斑干涉测量纳入大学物理实验，其中关键性障碍是拉式加载仪的制作。
A key obstacle to high accuracy location is the Non Line of Sight (NLOS) transmission of signal in wireless sensor network node localization. NLOS error is the main source of location error.
在无线传感器网络定位中，节点精确定位面临的一个主要问题是信号的非视距传播，非视距误差是节点定位误差的主要来源。
Policy identity plays an important role in policy implementation and the obstacle of policy identity is the key reason that leads to policy escape.
政策认同在政策执行过程中具有极为重要的作用，政策认同障碍是导致政策规避的重要心理原因。
Conclusion To prevent premature, improve the quality and prevent obstetric suffocation recovery for newborns infected, and the key of gastric bowel function obstacle.
结论预防早产、提高产科窒息复苏质量、防止感染，为防治新生儿胃肠功能障碍的关键所在。
There are some direct reason causing this problem . The key reasons are as follows: One is disgusting learning (42.8%), another is poverty (22.8%), and the third is the obstacle in learning (11.4%).
引起辍学的直接原因有很多，其中排列于辍学原因前三位的分别是厌学（占42.8％）、经济困难（占22.8％）和学习困难（占11.4％）。
Obstacle distance measurement is one of the key techniques for the deicing robot on high voltage transmission line.
障碍物测距是高压输电线路自主除冰机器人的关键技术之一。
Therefore, crossing over time and space obstacle are the key and the difficult problem.
因此。跨越时间和空间障碍是研究的关键和难点。
Obstacle detection is the key problem in vehicle vision navigation system on highway.
基于图像的高速公路障碍物检测是实现汽车视觉导航的核心问题。
This means that the model can predict the surmountable obstacle height of an off-road vehicle and its-key influencing parameters can be obtained.
表明该模型能预测车辆越障高度，具有工程应用价值，且获得影响其性能的主要参数。
This means that the model can predict the surmountable obstacle height of an off-road vehicle and its-key influencing parameters can be obtained.
表明该模型能预测车辆越障高度，具有工程应用价值，且获得影响其性能的主要参数。
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