Under suitable conditions, the conversion on 1 , 2-propanediol and the selectivity on acetone aldehyde is 69 %.

Copper-containing catalysts are the most suitable catalysts for producing 1, 2-propanediol through catalytic hydrogenolysis of glycerol.

对甘油催化氢解制取1, 2- 丙二醇效果最好的是含铜的催化剂.

Under suitable conditions, the conversion on 1, 2-propanediol asas % and the selectivity on acetone aldehyde %.

试验结果表明,在适宜的条件下, 该催化剂对1, 2-丙%,对丙酮醛选择性达到了%.

She always gave me a black look.

她总是对我怒目而视.

He gave me a black look.

他恶狠狠地看了我一眼.

He gave a black look at the impolite waiter in the restaurant.

他对不礼貌的餐厅服务员狠狠地看了一眼.

She gave me a black look when I stared at her.

当我盯着她时,她狠狠地瞪着我.

When I dropped the teapot she gave me a black look.

我把茶壶摔到地上,她恶狠狠地瞪我一眼.

He answered by giving me a black look.

他对我报以怒目相视.

Emerald sea, sardius ground, jasper sky to bleach.

翡翠之海, 玛瑙的大地, 漂白那碧玉色的天空.

Similarly, the study of continuous systems is steadily giving ground to that of discrete systems.

同样的, 连续系统的研究正不断地让位于离散系统的研究.

Larger values of the dispersion are common, but smaller values do not seem to occur.

比较大的离散度值是常有的, 但较小的离散度值却很少见.

This process of separation and spreading out of particles by random walks is known as diffusion.

粒子通过随机运动离散开去的这种过程就叫打散.

If the density is too low , however , gravity will be insufficient to halt its outward rush.

如果宇宙的密度太低, 引力就不足以阻止它向外离散.

Particle-dispersed is a mostly-used method to fabricate ceramic composites.

颗粒弥散增强复相陶瓷是经常使用的材料复合方法.

Objective To master the clinical characteristics and diagnosis treatment principle.

目的掌握急性弥散性血管内凝血(DIC) 临床特点及诊治原则.

Modern technology of communication can bring the people from all over the world together.

现代通讯技术能使世界各地的人都会集在一起.

New York City is a meetingground of people from almost every part of the world.

纽约市几是全世界各地人会集之处.

Nowadays, technology that is shared by all lines of research stimulates convergence of research interests.

现下, 研究的全部产品分享的技术刺激研究的会集使感兴趣.

I'm also concentrating on catching an error that I may have made.

我还会集中精力于捕捉我可能犯的错误.

The lamp of meeting burns long; it goes a at the parting.

聚会会议时的灯光,正点了良久, 会集时,灯便立即亡了.