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1·In guaran, about one-half of the D-mannopyranosyl main-chain units contain a D-galactopyranosyl side chain.

在瓜拉那中约一半D-吡喃甘露糖主链的单元含一个D-吡喃半乳糖侧链。

2·The mode of reform is to achieve its professional training aim, meet the demands of tourist enterprises. Effcient supervising system is the guaran…

实践性教学改革的模式是实现专业培养目标、满足旅游企业对人才需求的关键；

3·Mobile technologies such as EVDO and HSPA provide wide area coverage with consistent bandwidth guaran - tees; while technologies like WiFi provide high band - width and low latency.

诸如EVDO和HSPA这样的移动技术能够利用协调的有保证的带宽提供宽的覆盖范围；而想WIFI这样的技术提供高的带宽和低的等待时间。