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Since 1998 the US has required mandatory fortification of all grain products with folic acid - the synthetic, bioavailable form of folate - in order to reduce the incidence of neural tube defects - most commonly spina bifida and anencephaly.

从1998年开始美国就要求强化所有谷物中的叶酸含量--它是综合的，生物可利用性形式的叶酸盐--目的是为了减少神经管缺陷的患病风险-最常见的病症是脊椎裂和无脑畸形儿。

Oogonium develops into early oocyte in the ovary, and then the oocyte leaves the ovary for the coelomic fluid in the form of single cell or cell mass followed by the rapid separation of the group of oocytes into individual ones. Oocyte enters into the nephridium after its maturation. The rupture of germinal vesicle marks the oocyte maturation. Oocyte in the coelom does not have follicle membrane and vitelline membrane is formed and developed by the oocyte itself. Smaller oocyte (0μm in diameter) is round, and larger ones (≥60μm in diameter) is ovate. The short and long diameters of a morphologically mature oocyte are about 115—120μm and 140—145μm respectively, and the vitelline membrane is 7—9μm thick.

卵原细胞在卵巢中发育至早期卵母细胞时期单个或成团脱离卵巢入体腔液中，卵母细胞团细胞很快分离为单个细胞；卵母细胞在体腔液中发育成熟后进入肾管；生发泡破裂是卵母细胞成熟的标志；体腔中卵母细胞无滤泡膜，卵黄膜的形成与发育靠卵母细胞本身；卵径小于60μm的卵母细胞呈圆形，卵径大于60μm 的卵母细胞为卵圆形，形态上成熟的卵母细胞短径约115—120μm、长径约140—145μm、卵黄膜厚7—9μm。

Under light microscope, the egg is an oblated and agglutinated demersal with a narrow perivitelline space; eggs ranged in diameter from 1.95 to 2.38 mm with a mean of 2.18 ± 0.03 mm; their membrane are smooth and they have 5 to 7 cannular keratose egg-filaments; the oil globules are multiple, ranged in diameter from 0.05 to 0.50 mm and in number from 7 to 145 with a mean of 28±2, the position of them migrate during embryonic development; the yolks are ivory-white with no segments, ranged in diameter from 1.00 to 2.30 mm with a mean of 1.90 ± 0.03 mm; the development phases of the embryo are variable. So they were identified as the eggs of one Beloniformes.

在光学显微镜下：卵呈微扁圆形，卵径1.95~2.38mm，粘着沉性；卵黄间隙较窄，卵黄囊呈乳白色，无龟裂；卵膜平滑，在其表面有5~7根细长角质管状卵膜丝；多油球数不定（4~145），油球径0.05~0.50mm，油球在卵黄囊中的位置随不同的发育时期而不断发生变化；胚体处在不同的发育阶段，其特征符合颌针鱼目鱼卵的特征。

The problem was that the water pump could not pump in a nine-story residential building, as result the water would soon be used up. I arrived at night; found that liquid level relay broke down. then I installed a three-pole knife switch next to liquid level relay to power the pump manually, so the problem with no water to be solved provisionally. then I fitted the Level relay for them, finally the water pump can pump automatically again

有一次来电，物管说他们小区没有电工，说一幢9层的住宅楼一楼的水泵泵不上水，水池很快就会无水用了，晚上我到达现场，原来是液位继电器坏了，我当时已带上了三极的闸刀开关，在继电器的旁边装上闸刀开关，手动供电给水泵，临时解决了没水用的问题，过后才为他装上液位继电器，又恢复了自动泵水。

Results: 1. The three-dimension (3D) model reconstructed by Micro-CT scan data objectively reflected the real contour and the pulp cavity figure of the tooth.

实验结果： 1。本研究采用Micro-CT扫描，准确、安全、无创伤、分辨率高，所得到的断层信息可以较清晰的显示牙体组织及根管系统等结构，又不破坏标本的完整性。

The reaction conditions of methanol dehydrogenation to water-free formaldehyde was studied in a 16mm diameter fixed bed ceramic tube reactor,using Na_2CO_3 as catalyst,which was prepared by different ways.

在一个内径为16mm的固定床陶瓷管反应器中，研究了用不同方法制备的碳酸钠催化剂催化甲醇脱氢制无水甲醛反应的工艺条件。

These deformations′ influences on the quality of finished tube were further discussed in detail.

这些研究对管形零件无芯模冲孔工艺的制定、优化以及模具结构的设计具有一定的指导作用。

Electron microscopy revealed that large amount of elastic fibers were found under the inner wall of Schlemms canal and in JCT and trabecular meshwork.

电镜下可见Schlemm氏管内壁与其下的细胞外基质结构对合，JCT组织较紧密，无内壁与其下JCT的分离；细胞与细胞及细胞与基质间的连接保持完整。

Results: Scans of 3D-FIESTA sequence combined with post-procession could precisely show labyrinth, nerves and vessels in inner ear and internal auditory canal, as well as the relationship between nerves and vessels around. As to the ability to evaluate nerves in IAC, MPR and VE was superior to MIP; As to the ability to display semicircularesin and cochlea, MIP was the same as double oblique MPR; It was important for VE and oblique sagittal MPR to display the position of foramina nervosa of IAC.

结果：3D-FIESTA序列扫描结合MPR、MIP和VE重组对内耳迷路及内听道内神经及血管显示清晰，能够清晰显示两者之间的关系，MPR和VE重组对神经的显示优于MIP重组，MIP对半规管显示与双斜面MPR并无明显差别，VE和斜矢状面对于内听道内各神经孔的位置关系具有重要意义。

The impact of repetition on Gas Chromatogram was studied with glass wool in glass injector insert and different concentration samples.

本文研究气相色谱进样系统中，玻璃衬管中有、无玻璃棉填充以及样品浓度的高低对仪器的重现性的影响。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐