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。
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