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A monaural presentation has to be used to yield a clear effect.

一个单声道的一定要有清晰的效果。

Lines of"CP"and"HoCP"are early varieties, and they showed high sucrose content and high resistance to smut disease, mosaic disease and drought, and can be used as parents for crossing with varieties of high yield and large stem to breed new varieties.

本研究中的"CP"、"HoCP"系列品种早熟、高糖，且黑穗病、花叶病的抗性强，耐旱性较强，可尝试用作亲本与我国的高产大茎品种杂交选育新品种。

musicotherapy, health is taught and use integratedly of supportive therapeutics, conduce to the analyse palace yield that lowers angst to wait for a puerpera, be helpful for mother baby health.

结论音乐疗法、健康教育和支持疗法的综合使用，有助于降低焦虑待产妇的剖宫产率，有利于母婴健康。

The aim was to select effective methods to breed the stable high-yield strains of nitrile hydratase.

［目的］选择有效的方法选育稳定的腈水合酶高产菌株。

According to the observation experiment at the Jiufeng station where there is smaller environment noise, the conclusions are drawn as follows.In the normal atmosphere, the observed value is about 500×10-5ms-2, which is greater than theoretical value about 30×10-5ms-2, and if in the low vacuum, the observational error about 2.3×10-5ms-2 is generated. The vacuum maintaining system in falling room can not work normally, which will yield 0.1~4.1×10-5ms-2 error to the gravimetric observation. In the case of that the measurement is in the stable geological conditions and the smaller environment noise, the action of vibration isolating spring is not obvious, but it yields greater effects on measurement accuracy.

通过在环境干扰较小的九峰站观测实验，得到如下结论：在正常大气压状态下所观测到的空气阻力影响约500×10-5ms-2，比理论估算值大近30×10-5ms-2，若在低真空状态测量空气阻力也将产生2.3×10-5ms-2观测误差；落体室真空度维持系统工作不正常，空气阻力也将对重力观测造成0.1~4.1×10-5ms-2的观测误差；在地质条件比较稳定，环境震动干扰较小的基墩上测量，隔震弹簧的作用对观测结果影响不明显，但对测量精度影响较大。

objective to investigate the optimal technological process to increase the product yield of milk cheese.

目的确定提高牛奶干酪出品率的最优工艺条件。

Special types of male sterility, ideal root structure, higher outcrossing percentage, and GH effect insensitive genotypes are also believed to contribute a great deal to soybean yield improvement in the future.

并结合生产条件的变化和大豆品种资源研究的进展等因素，提出近期和未来对大豆产量改良可能起到重要促进作用的一些性状或侧重的研究方向。

With ester- 27 in hand, the vinyl group was next converted to the aldehyde moiety via ozonolysis, employing reduction of the ozonide with dimethylsulfide or PPh 3 , followed by treatment with DBU in THF to effect epimerization; aldehyde- 29 was produced in a combined yield of 65% for the two steps.

同酯-27手，下一组黑胶转为经醛啉臭氧、用人的臭氧减少与甲基或产后大出血3、治疗后，在指定四氢呋喃对异构；醛类-29年联合摄制产量65%的两步。

Whenpyridine was used as reductive decomposing agent, the expecting cholest-4-en-3,6-dione-22-al was obtained. However, when Zn/HOAc was used to decomposethe ozonide, C-4,5 double bond was further reduced to give cholest-3,6-dione-22-al as main product. 2 For the side-chain construction of compound (1), the solid-liquid phase-transfer Wittig reaction was used. When (3-methyl-2-oxobutyl)-triphenylarsonium bromide was used as reagent, the reaction can be carried out inmild reaction condition and the yield is higher than that when phosphorane wasused.

但使用Zn／HOAc作为分解剂时，却得到其氢化产物胆甾-3， 6-二酮-22-醛；2在甾体支链引入过程中，采用固-液相转移Wittig反应的方法，用(3-甲基)-2-氧丁基三苯基溴化胂作为试剂，反应在非常温和的条件下便可完成，而且产率比传统采用膦烷的方法更高；3在对某些甾酮化合物的选择性还原反应研究时，发现在〓还原体系中，当加入某些金属离子后，反应有更好的区域选择性和立体选择性。

But to pacify China's US critics , it needs to yield tangible results soon .

但是，要安抚批评中国的美国人士，需要很快拿出切实成果。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！