维生素

Milk is one of the few food sources in the American diet of vitamin D, which is fast emerging as a "super nutrient." Other major sources of vitamin D are exposure of the skin to ultraviolet rays of sunlight, and the fattier varieties of fish.

牛奶是当今世界为数不多的食物来源，在美国国会的维生素d ，这是快速发展的新兴作为一个&超级营养&，其他主要收益来源的维生素d暴露的皮肤上，以紫外线的阳光，和fattier品种的鱼。

The Vitamin B complex is one of the most important of the vitamins that influence the health and performance of the nervous system, as it is members of this powerful group that are responsible for the creation of some of the most basic structures within the nervous system.

在复合维生素B是其中一个最重要的维生素，影响健康和性能的神经系统，因为它是强大的成员，这个小组，负责建立一些最基本的结构内的神经系统。

Most multivitamins have a substantial amount of vitamin D.

综合维生素中含有大量的维生素D。

At the same time, vitamin C is composed of one key element of the eye lens, the lack of vitamin C easily lead to lens opacities.

同时，维生素C也是组成眼球晶体的重要成分之一，缺乏维生素C容易引起晶体混浊。

You can help your tortoise considerably by providing a dietary vitamin and mineral supplement such as "Vionate", or "Herptivite" regularly, this is particularly important when overwintering, as it contains vitamin D3 which is usually synthesized from sunlight.

你可以考虑有规律的给你的龟直接的维生素和矿物质的补充，像&Vionate&或&Herptivite&，对越冬的龟尤其重要，比如维生素D3，通常是阳光照射后体内合成的。

It features: Essential vitamins and minerals - balanced potencies growing minds and bodies need, and key nutrients - Vitamin K, critical for infants' health; the antioxidant selenium; and choline, important for brain function.

它的功能：基本维生素和矿物质-均衡的效力越来越多的精神和身体的需要，关键的营养素-维生素K ，对于婴幼儿的健康；抗氧化硒；和胆碱，重要的脑功能。

Scientists are excited about a vitamin again. But unlike fads that sizzled and fizzled, the evidence this time is strong and keeps growing. If it bears out, it will challenge one of medicine's most fundamental beliefs: that people need to coat themselves with sunscreen whenever they're in the sun. Doing that may actually contribute to far more cancer deaths than it prevents, some researchers think.

美国研究人员近日发现，晒太阳可能有防治癌症的功效，因为越来越多的证据表明被称为&日照维生素&的维生素D对预防和治疗淋巴瘤、前列腺癌、肺癌、甚至皮肤癌等多种癌症有重要作用，尤其在防治结肠癌方面的表现最为突出。

Scientists are excited about avitamin again.But unlike fads that sizzled and fizzled,the evidence this time is strong and keeps growing.If it bears out,it will challenge one of medicine's most fundamental beliefs:that people need to coat themselves with sunscreen whenever they're in the sun.Doing that may actually contribute to far more cancer deaths than it prevents,some researchers think.

美国研究人员近日发现，晒太阳可能有防治癌症的功效，因为越来越多的证据表明被称为&日照维生素&的维生素D对预防和治疗淋巴瘤、前列腺癌、肺癌、甚至皮肤癌等多种癌症有重要作用，尤其在防治结肠癌方面的表现最为突出。

D-Pantothenyl alcohol, also called ortho-vitamin 85, is an important nutrition suppled substance. It has been widely applied in the field such as medicine, cosmetic, foodstuff, feed additive, and so on. The preparation of D-pantothenyl alcohol and the optimization of key factor are discussed mainly in this paper. It mainly includes three section.In the first section, with formaldehyde, isobutyl aldehyde and diethyl oxalate as the starting materials, D-pantolactone is prepared via three steps including condensation, catalytic hydrogenation and physical resolution. The specific rotatory power of the product is consistent with imported product.

D-泛醇，俗称原维生素B_5，属维生素B旋类营养增补剂，广泛应用于医药、化妆品、食品、饲料等领域，本文着重探讨了其制备及关键因素的优化，主要内容可分三部分：第一是D-泛内酯的制备，先以甲醛、异丁醛和草酸二乙酯为起始原料合成酮基泛内酯，再经催化氢化得到DL-泛内酯，然后通过物理拆分获得D-泛内酯，得到产物的比旋光度与进口产品基本一致。

450 juvenile Jian carp were divided randomly into three groups with triplicates,and fed with the experimental diets with 0.20,1.71 and 6.32mg vitamin B6 per kg diet,respectively.

选取450尾健康幼建鲤，随机分成3组，每组3个重复，分别饲喂维生素B6含量为0.20、1.71和6.32mg/kg的饵料，研究了维生素B6缺乏对幼建鲤组织器官病理学变化及消化能力和非特异性免疫能力的影响。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。