Highway construction project cycle length, high technical difficulty, the engineering geological exploration as a basis for the highway construction has a decisive role.
高速公路建设工程周期长、技术难度高，其中工程地质勘探作为基础对于整个高速公路的建设有着决定性的作用。
Staining as a result of organic cotton is a very high technical difficulty of the project, the world can do much of the staining of the enterprise, the standard has not yet developed.
由于有机棉染色是一个技术难度很高的项目，目前世界上能够做这个染色的企业不多，标准还未制定出来。
Despite a high en bloc resection rate, its technical difficulty and risk of complications limit the widespread use of colorectal endoscopic submucosal dissection (ESD).
尽管大肠病变的内镜黏膜下剥离术(esd)有高的整块切除率，但其技术难度和并发症的风险限制了它的广泛使用。
The curtain grouting project for the dam of Xiaolangdi Multipurpose project is large in size, big in difficulty, complex in geological conditions and high in technical requirements.
小浪底大坝帷幕灌浆工程规模大、难度大，地质条件复杂，技术含量高。
The existing technical mining method efficiency is low, the cost is high, the scale is small, the big area implements and lacks the market competition ability with difficulty.
现有技术的开采方法效率低、成本高、规模小，难以大面积实施和缺乏市场竞争能力。
But the high requirement has been able to cause the technical complexity too to be strong, the implementation difficulty is big, the application foreground is not optimistic.
但过高的要求就会导致技术复杂性太强，实现难度大，应用前景不乐观。
While under the condition of high temperature and high pressure, the safe drilling in thin safe density window is the technical difficulty that can not be solved well around the world.
随着深部油气藏的勘探和开发，深井及超深井的数量大幅度增加，而深井超深井在高温高压条件下，窄安全密度窗口内的安全钻井是当前国内外都未能很好地解决的重大技术难题。
While under the condition of high temperature and high pressure, the safe drilling in thin safe density window is the technical difficulty that can not be solved well around the world.
随着深部油气藏的勘探和开发，深井及超深井的数量大幅度增加，而深井超深井在高温高压条件下，窄安全密度窗口内的安全钻井是当前国内外都未能很好地解决的重大技术难题。
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