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At least one through-bore in each of the drill guide arms guides a drill bit at right angles into the work piece, with each through bore (17, 18) having an axial length sufficient for guiding a hand held drill to drill a work piece bore at right angles to the joint surface.

在每个钻孔导向臂中至少有一个通孔，用于以直角将钻头导向到工件中，每个通孔（17，18）都在轴向上足够长，以在与连接表面大致成直角的方向导引手持钻头来钻出工件孔。

In this paper, we studied M. meretrix ferritin, cathepsin B and caspase genes, which are involved in clam larval shell formation, nutrition, metabolism and apoptosis, respectively. We have cloned the three genes, investigated the temporal and spatial expression profile both at gene and protein level in trochophore (L1), D-veliger (L2), pediveliger (L3) and postlarvae (L4). The potential roles of these proteins were analyzed with specific inhibitors during larval development. Firstly, embryos were found developed into trochophore-like larvae with no shell if cultured at gastrula stage in artificial seawater without iron. Shell-like structures were formed only in the presence of iron. The larvae which had been transferred at L1 stage into ASW developed normal shell. This indicated that iron and iron associated protein are important for larval shell formation. The EST sequence which is homologous with ferritin, which is a principal iron metabolic protein, was selected from the M. meretrix cDNA library. The full-length of ferritin subunit cDNA was cloned by RACE. The results of real-time PCR revealed that the MmeFer mRNA expression changed before and after the larval shell formation.

本论文以文蛤幼虫为研究对象，分别对文蛤幼虫发育过程中贝壳形成相关的铁蛋白、营养及变态相关的组织蛋白酶B及变态过程中细胞凋亡相关的caspase三个基因进行了克隆，分析了基因及编码蛋白在担轮幼虫期(L1)、D形幼虫期(L2)、壳顶幼虫期(L3)和稚贝期(L4)的时空表达特征，解析了其可能的功能，并研究了相应酶类的特异性抑制剂作用对幼虫发育过程的影响，进行了目标蛋白的功能验证，详述如下：研究结果显示，在文蛤胚胎发育到原肠胚时放入不含铁离子的人工海水中培养，发育成无壳的畸形，随着人工海水中铁离子添加浓度的升高，幼虫长出壳状组织接近正常状态；而发育到L1期幼虫放入不含铁离子的人工海水中培养却可以发育出正常的壳，推测铁和铁代谢相关蛋白在幼虫贝壳初始形成有重要的作用。

The conditions for HPLC to detect endogenous polyamines were optimized, that is, benzoylation for 30min at 37℃, detection wave length at 230nm, elution speed at 0.7ml·min〓 Using the above method, endogenous polyamines of calli in Citrus were analyzed.

优化了植物多胺的HPLC测定条件，确定在37℃苯甲酰化反应30min，检测波长230nm，流速0.7ml·min〓效果最佳。

Using four different Na_2CO_3 concentration as simulating alkaline stress,the relative alkali damage rate of rice germinative energy and germination rate at germination period,RADR of rice root length,seedling height and root number at early seedling stage were looked as evaluation indexes,so the alkaline stress concentration for evaluation of alkaline tolerance at germination period and early seedling stage in rice was studied.

通过采用4种不同浓度的Na2CO3模拟碱胁迫，以水稻发芽期发芽势和发芽率的相对碱害率以及幼苗前期的根数、根长和苗高的相对碱害率为鉴定评价指标，研究水稻发芽期和幼苗前期耐碱性鉴定的碱胁迫条件。

The results show that a few cavitations distribute randomly and isolatedly in the gauge length in Mg-8.42Li alloy at 573 K and 1.67×103 s1. The transgranular fracture appears at 573 K and 5×104 s1 in Mg-8.42Li alloy and dimple fracture along grain boundary appears at 573 K and 1.67×103 s1 in Mg-7.83Li alloy.

结果表明：Mg-7.83Li和Mg-8.42Li合金分别获得850%和920%的最大超塑性；Mg-7.83Li合金在573 K时发生了显著的超塑性晶粒长大；在573 K和1.67×103 s1条件下制备的Mg-8.42Li合金中的空洞较少，且在变形区中随机而孤立地分布。

In this context the wild mango germplasm at Lapuo County, Guangxi, China were studied by using their biological characteristics and the amplified fragments length polymorphism molecular marker. These wild mangoes were found morphologically similar to Mangifera indica; and the AFLP markers showed that at the similarity coefficient of 0.63, 92 mangoes including cultivars, Mangifera sylvatica Roxb., wild mangoes, Mangifera. Siamensis Warbg. were divided into 14 groups and that the wild mangoes at Lapuo were close to M. sylvatica Roxb. and M. siamensis Warbg., but remained to fall in the middle of the cultivars and could not be separated from them.

结果表明：那坡县野生芒果在形态学上与普通芒果较为相似；AFLP标记显示，包括部分栽培品种、林生芒果、广西百色那坡县野生芒果、泰国芒果等在内的92份芒果种质在相似系数0.63的水平上可分为14组，广西百色那坡县野生芒果虽然与林生芒果、泰国野生芒果等芒果属其它种较为接近，但仍处于栽培芒果的中间，不能与栽培芒果分开。

Vibrio cholerae adherence to and colonization in the small intestine are essential step in the pathogenesis of cholera. At least one type of pili, known as TcpA, is required for the colonization process. This paper reports the electron microscopic evidence showing that V. cholerae 01 and 0139 serogroups can express at least 4 types of pili when incubated at 28℃ on AKI agar or CFA (pH6.8). Among the four types, three can be expressed by classical and El Tor strains of Vibrio cholerae 01: TcpA pili are peritrichous,being 7-8nm in diameter, 5-10μm in length, and form bundles of parallel undulating filaments of 0.5-0.8 μm wide and 10-15μm long; Type B are 3-4nm in diameter, up to 2μm long, and of wavy morphology; Type C are 7-8nm wide and 0.5-0.8μm long.

本文通过电子显微镜对01群霍乱弧菌古典生物型和El Tor生物型以及0139群霍乱弧菌研究发现，在培养基AKI和CFA(pH6.8)28℃培养条件下，01群EVC和CVC均可产生TcpA，B型和C型菌毛；0139群霍乱弧菌可产生TcpA和B型菌毛，与01群一致。

I was now furnished with Roots and Corn, such as it was, and Water, and leaving my friendly Negroes, I made forward for about Days more without offering to go near the hoar, till I saw the Land run out a great Length into the Sea, at about the Distance of four or five Leagues before me, and the Sea being very calm I kept a large offing to make this Point; at doubling the Point at about two Leagues from the Land, I saw plainly Land on the other Side to Seaward; then I concluded, as it was most certain indeed, that this was the Cape de Verd, and those the Islands, call'd from thence Cape de Verd Islands.

现在，我有了不少杂粮，又有了水，就离别了那些友好的黑人，一口气大约又航行了十一天，中间一次也没有登岸。后来，我看到有一片陆地，长长地突出在海里，离我们的船约十三、四海里。当时风平浪静，我从远处经过这海角；最后，在离岸六海里左右绕过这小岬角后，又发现岬角的另一边海里也有陆地。这时，我已深信不疑，这儿就是佛得角，而对面的那些岛屿即是佛得角群岛。

Muscular and handsome breed of working dog known for its distinctive white mask and dark widow's peak; also called Arctic sled dog; double coat is thick, of medium length, coarse, and insular and comes in various shades of gray with lighter white and darker black areas; ears relatively small compared to head and are erect and slightly rounded at ends; tail is bushy and carried gaily and loosely curled over rump; eyes are almond-shaped, wolflike yet trusting, and light brown in color; adult stands 20 25 in.(51 64 cm) tall at shoulders and weighs 50 85 lbs (23 39 kg); firm, compact feet allow dog to pull heavy loads through deep snow; where the Siberian husky is designed for speed, this breed is designed for power; very fond of people, especially children; enjoys rolling around in snow and prefers outdoor life; great at sled-pulling contests; named after the Mahlemuts, nomadic and skilled Inuit people who migrated from Siberia over a land bridge into northwestern Alaska with these dogs thousands of years ago.

爱斯基摩犬是工作犬的一支，肌肉发达，英俊潇洒，因其与众不同的白色双颊和暗色额头&V&型发尖而闻名，它也被称为&北极雪橇犬&；厚而粗糙适中长度偏狭的双层毛皮，以多样化的灰度梯度混杂着轻度的白色和深黑区域表现出来；耳朵相对头部较小，挺立并轻微地环绕在头部末位；尾巴浓密的，松弛地卷曲盘绕在臀部上方；眼睛呈杏仁状，狼一般的长相，值得信赖，毛色呈浅棕色；成年犬站立肩高51—64厘米，重23—39公斤；牢固坚实的足部使得爱斯基摩犬能够拉动重负载在深厚的雪中前进；如果说西伯利亚哈士奇被认为是速度的象征，爱斯基摩犬被认为是力量的象征；它们喜欢人类，尤其是孩子，喜欢在雪中滚动，尤其喜欢户外生活；非常擅长牵引雪橇的竞赛；它以爱斯基摩而命名，游牧和富有经验的因纽特人在几千年前和这些狗一起从西伯利亚通过北方大陆桥迁移到阿拉斯加。

His AERIAL LOCOMOTIVE, with a hydrogen-filled compartmented gas "spindle" 800 feet in length and 50 feet in diameter, was to carry between 50 and 100 people at a speed of 60 to 100 mph The great machine was to be remain aloft for 12 hours at a time, propelled by two steam engines driving two "fan wheels or propellers" each of which would be 20 feet in diameter and revolve at 200 rpm He estimated that the machine would weigh a total of some 14,000 pounds and would generate a total buoyant lift of 56,000 pounds, leaving 42,000 pounds for 200 passengers and luggage.

他的空中机车，与氢气填充compartmented气体&主轴&八百英尺在长度和50英尺，直径，是进行50至100人的速度在60至一百英里每小时伟大的机器是要继续高举12在一小时的时间，推进两个蒸汽火车驾驶&两个风扇车轮或螺旋桨&，其中每会20英尺，直径和旋转，在200 rpm的他估计，机器重量共约一四○○○磅，并会产生一个总蓬勃解除五六〇〇〇磅，离开四二零零零磅为200名乘客和行李。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。