查询词典 asymmetric

The new system has been applied to the asymmetric catalytic reduction of pro ketones .

第一次成功设计、合成了新型的双手性口恶唑硼烷还原体系，并将其应用于前手性酮的不对称还原。

When we used ligand 3k-Zinc in the asymmetric addition of phenylacetylene to ketones at room temperature, the highest ee was up to 85%.

当我们用配体3k-Zinc作为催化剂在对苯乙炔对酮的不对称加成反应中，产物最高的ee可达85％。

The advances in asymmetric reduction of prochiral ketones to chiral alcohol s with biocatalysis are reviewed.

综述了国内外利用生物催化羰基的不对称还原合成手性醇的研究情况。

Asymmetric Digital Subscriber Line ADSL is a relay in the absence of the subscriber loop network, the use of the load of high-speed digital telephone lines to provide access to the transmission technology.

不对称数字用户线 ADSL是在无中继的用户环路网上，使用有负载电话线提供高速数字接入的传输技术。

The normal mamillothalamic tracts and mamillary bodies were symmetric in size and signal intensity. The abnormal mamillary bodies were identified as asymmetric in size.

正常乳头丘脑束及乳头体两侧对称，信号均匀，与穹窿的信号一致；异常的乳头体表现为两侧不对称，一侧明显变小，并且乳头丘脑束显示不清。

According to the structure of the product, the unique asymmetric tilt mandril of the core side-pulling mechanism and the cool- ing system made up of channel and deep cavity are designed, which increases the ability of cooling and ensures that the product can be successfully taken out from the injection mould.

根据产品的结构，设计了独特的横向斜错位非对称斜顶侧向抽芯机构和深水孔加冷却水道的冷却系统，提高了模具的冷却效果，确保了产品顺利脱模。

There are some horizontal vessels with double saddles, in which the structure or loads are asymmetric to the mid-span section, in engineering practice.

工程上存在一些结构或载荷相对于跨中截面为非对称的双鞍座卧式容器，这些容器的设计计算超出了GB150-89的范围，目前国内也尚无其它标准可引用。

Benefits of this system were obvious over a conventional twin layout, with only the same frontal area as a single-engined aircraft, the wing left clean of engine nacelles and attendant structures, and no asymmetric pull if one engine cut out.

这样的系统的好处明显超过了传统的双螺旋桨布局形式，他就如同一架具有有相同迎风面积的单引擎飞机。不在机翼下安置发动机舱和辅助结构，就不会因为一台发动机的熄火而产生不对称的推力。

Badged Chana, this pair are quite striking to look at -- the sedan has a hint of Volkswagen CC in the bodyside, while I like the SUV's cool asymmetric rear end -- but are little more than vaporware from a company that for now rebadges other manufacturers' cars.

车查，这两人是相当惊人的审视-轿车已暗示大众消委会在bodyside ，而我喜欢越野车的阴凉不对称尾部-但略多于vaporware一家公司，目前rebadges其他制造商的汽车。

There are four C-phycocyanin trimers in the asymmetric unit, which associate face-by-face to form two hexamers.

晶体不对称单位中共有四个C-藻蓝蛋白三聚体，它们面对面地紧密聚合成两个六聚体。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。