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- Grazing disturbance had positive or negative effects on vegetation and was sometimes helpful for spe-cies diversity maintenance and conservation. 其利弊取决于干扰本身的性质、强度以及草地群落的结构特征,适度的放牧干扰可以促进物种多样性的维持与保护。
- Synchronously it brought forward the study content of diversity maintenance decision system to make the computerized decision of maintenance ways realized. 同时提出差异维修决策支持系统的研究内容,以实现设备维修方式决策的微机化。
- Brought forward the reliability-centered diversity maintenance theoretics that based on the breakdown discipline of advanced manufacture equipment, in order to direct maintenance management of the enterprise. 摘要在研究先进制造设备故障规律及特点的基础上,提出以可靠性为中心的差异维修理论,以指导企业对设备的维修管理。
- Divers persons were present, of all stations in life. 不同身份的、形形色色的人都出席了。
- The machinery requires constant maintenance. 这些机器需要经常保养维修。
- The diver poised on the edge of the high board. 跳水运动员在高台边上站稳。
- The divers tried to float the sunken ship. 潜水员想使沈船浮起。
- Maintenance of PC is in my element. 我对电脑的维修保养很在行。
- The young diver is working under the water with a diving suit. 潜水员穿着潜水衣正在水下工作。
- He's taking classes in car maintenance. 他正在上汽车维修课。
- Who is responsible for the building's maintenance? 谁负责这座大楼的保养事宜?
- Has he enrolled in the car maintenance class this year? 他今年报名参加汽车维修班的学习了吗?
- The petitioner ask for a variation in her maintenance order. 上诉人要求对她生活费的命令的条件进行变更。
- The diver put wads of cotton in his ears. 潜水员以小块棉花塞在耳朵里。
- A lot of the cost of maintenance go into renew brake. 很多的维修费用都花在了更换煞车方面。
- The diver first drew a deep breath. 跳水员先深深地吸了一口气。
- We should have a bit more diversity in our army. 我们军队要搞得生动活泼些。
- He had to work hard for the maintenance of his family. 他为了养家不得不去拼命工作。
- The sky diver dropped toward the earth. 延缓张伞跳伞者降落到地上。
- Without diversity, there can be no UN either. 没有多样化,也不成其为联合国。