体

Abnormal chromosome was detected in 17 fetuses. Among them, trisome 21, trisome 18, trisome 13, Turner syndrome, Klinefelter syndrome, short arm deletion of chromosome 18, and inverted chromosome 9 were detected in 8, 3, 1, 1, 1, and 2 fetuses, respectively. Abnormal chromosome was found in 5 out of 8 fetuses who received serum screening. Ultrasound showed abnormal chromosome in 11 fetuses.

共诊断17例胎儿染色体异常，其中21三体8例，18三体3例，13三体1例， 1 Turner综合征1例，Klinefelter综合征1例， 18染色体短臂微缺失1例，9号染色体臂间倒位2例(1例来源于母亲)。17例中有8例进行了唐氏儿血清学筛查，5例异常，11例超声检查胎儿有结构异常。

Progeny of this plant included aneuploids, such as trisomic and tetrasomic.

这一异常植株的花粉母细胞仍为混倍体，其子代中有二倍体和各种非整倍体植株。

Objective To study the incidence of trisomy 18 in NMRI mice and its developmental malformations.

目的 通过对 18三体在 NMRI小鼠发生率的研究及 18三体胚鼠和正常胚鼠的大体形态学对照观察，进一步认识 18三体 NMRI小鼠的生长发育畸形。

This is very rare and is thought to involve trisomy rescue; ie, the zygote started off as a trisomy and one of the three chromosomes was lost, leading to uniparental disomy in 1/3 of cases.

这是很罕见的并被认为还涉及三体挽救，即合子开始时为三体，而三条染色体中的一条丢失后在1/3的情况下导致单亲二体。

Micrognathia also was more common defects in trisomy 18. The vast majority of fetus with trisomy 13 and 18 can be detected by routine ultrasound examination.

小下颌、叠指畸形也是较常见的畸形，见于18三体。18三体和13三体的畸形在超声筛查中检出率较高。

The steel selected for this investigation is spring steel 50CrVA for automobile in this paper,the appropriate duplex microstructure of lower bainite and martensite was obtained through isothermal quenching and low temperature tempeing heating treatment,then the effect of duplex microstructure and tempered troostite on strength-toughness of spring steel 50CrVA is compared.

以汽车用弹簧钢50CrVA为研究对象，通过等温淬火+低温回火热处理工艺获得适当比例的回火马氏体和下贝氏体的复合组织，并在此基础上比较复相组织和回火屈氏体对弹簧钢50CrVA 强韧性的影响。试验结果表明：在弹簧要求的HRC硬度在50~54范围内，在910℃保温30 min+360℃等温20 min淬火+300℃保温60 m in回火工艺得到复相组织的强韧性最好

An analysis revealed very significant positive correlation between trophozoite area and nucleus area (r=0.54, P .01), trophozoite volume and nucleus volume(r=0.47, P .01), and negative correlation between trophozoite area and trophozoite roundness (r=-0.29, P .01), no significant correlation between nucleus roundness and trophozoite roundness.

相关分析显示滋养体与核的面积(r=0 。5 4 ，P 。0 1)、滋养体与核体积(r=0 。4 7，P 。0 1)相关性有显著性意义，滋养体面积和核圆度呈负相关(r=- 0 。2 9，P 。0 1)，滋养体圆度和核圆度之间无相关性。

To observe the abnormal morphs of the trophozoite of Giardia lamblia in vitro axcenical cultivation. G. lamblia trophozoites were cultivated axenically in modified TYI-S-33 medium. Sediments, which contain the trophozoites, on the bottom of the culture tubes were collected at different time after inoculations.

目的 观察体外纯培养的蓝氏贾第鞭毛虫滋养体的异常形态，方法用改良TYI-S-33培养基培养贾第虫，在接种后不同时间取培养管底部虫体涂片，Giemsa's染色，在显微镜下观察虫体形态并照相。

Experimental mice were exposed to Trypanosome evansi after injection by different doses of antigenic reservoir. The results showed that 20 μg dose produced 83% and 67% protection to 2 sample variations after 4 immunizations. However, 3 immunizing doses could not give good protection. No protective effects were detected when experimental animals immunized by single VSG exposed to isotype from different rabbits.

用不同剂量抗原库免疫小鼠后进行攻虫，结果显示：经四次免疫后，20μg 剂量对随机抽取的两个变异体100 条虫体的保护率分别达到 83%和 67%；改变免疫方法，经三次免疫后的保护效果不理想；用单一 VSG 抗原免疫小鼠，接种来自不同兔体的同型虫体，不能起到相应保护作用。

A heavy duty tire comprises a tread portion, a pair of sidewall portions, a pair of bead portions each with a bead core therein, the bead core with an aspect ratio (HC 1 /WC) of from 0.43 to 0.58, and a carcass comprising a carcass ply of cords extending between the bead portions and turned up around a bead core in each bead portion from the inside to outside of the tire so as to form a pair of turnup portions and a main portion therebetween, the turnup portion comprising a turnup main-part extending along an axially inner surface, a radially inner surface and an axially outer surface of the bead core smoothly, and a turnup sub-part extending from the turnup main-part toward the main portion near the radially outer surface of the bead core.

本发明公开一种重载轮胎，包括：胎圈部分；一对胎侧部分；一对胎圈部分，每个胎圈部分中具有一胎圈芯，所述胎圈芯的高宽比(HC1/WC)在0.43到0.58范围内；以及胎体，其包括胎体帘布层，该胎体帘布层的帘线在胎圈部分之间延伸并且绕每个胎圈部分中的胎圈芯从轮胎内侧卷绕到轮胎外侧，而形成一对卷起部分以及位于该对卷起部分之间的主体部分，卷起部分包括沿胎圈芯的轴向内表面、径向内表面以及轴向外表面平滑延伸的卷起主部以及邻近胎圈芯的径向外表面而从卷起主部朝主体部分延伸的卷起子部。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失