丝的

Meiotic pachytene bivalents were obtained from porcine testes using prolonged hypotonic treatment combined with high chloroform Carnory's fixative solution. Mitotic metaphase chromosomes were prepared from blood cell culture. Comparative studies on division index and length of pachytene bivalents and mitosis metaphase chromosomes showed that those of the former are 5 times higher and 3.42(1.87～5.98) times longer than the latter, respectively. Chromomere maps of bivalents are more abundant than mitotic metaphase G-bands, while they are correspondent with mitotic early-metaphase G-bands. The result was found by using the chromosome 12 as a sample.

以性成熟公猪睾丸和外周血为材料，采用长低渗、高氯仿卡诺固定液固定和外周血细胞培养制备减数分裂粗线期二价体和有丝分裂中期染色体，通过对二价体和有丝分裂中期染色体分裂指数和长度的比较研究，发现二价体的分裂指数和长度分别是有丝分裂中期染色体的5倍和3.42倍(1.87～5.98)；同时以12号染色体为例，比较了二价体上的染色粒结构带与有丝分裂中期染色体G-带，表明染色粒结构带比中期染色体G-带带纹丰富，而与早中期G-带带纹吻合。

Activation of a muscle fiber causes release of calcium into the environment of thick myofilaments , revealing the binding sites on the thin filaments that permit cross bridging from the thick filaments.

一种肌肉丝纤维的促动作用引起钙稀释到厚的肌原丝环境，揭开连结在薄丝处，它允许交叉的架桥连结的从厚的丝。

The content of this course mainly include the feature, equipment, principle and application of high efficient welding method, for example, activating flux assisted TIG welding, narrow gap TIG welding, hot wire TIG welding, oscillating arc TIG welding, plasma TIG welding tandem MIG welding, hybrid arc welding, surface tension transfer MIG welding, oscillating arc MIG welding, mixed-gas MIG welding, two wire or more SAW welding, friction stir welding and laser-MIG hybrid welding, etc.

主要内容涉及到助焊剂TIG焊技术、窄间隙TIG焊技术、热丝TIG焊技术、摆动电弧TIG焊技术、等离子弧焊技术的基本原理、设备、特点和应用。双丝焊MIG方法、复合电弧技术、表面张力过渡、摆动电弧MIG、交流MIG焊、混合气体MIG焊的原理、特点、设备和应用。双丝以及多丝埋弧焊技术、窄间隙埋弧焊技术的原理、特点和应用。搅拌摩擦焊以及激光电弧复合焊接的原理、特点、设备、应用范围。

These results are consistent with the hypothesis that, following fiber activation, a significant portion of the optically anisotropic elements rotate towards the actin filament causing the interfilament mass content to undergo redistribution.

上述结果表明肌动蛋白丝和肌球蛋白丝之间的重叠区和非重叠区中横桥的平均取向是不同的，在钙离子作用活化收缩时，会导致肌动蛋白丝和肌球蛋白丝之间的质量重新分配。

The effect of the cross-linking agent on the sericin's physical property and structure was discussed.

结果表明，交联剂对丝胶蛋白膜的交联作用明显，引起了丝胶结晶形态的变化；并改善了丝胶蛋白膜的物理性能，交联剂PEGO10加入 30 %左右所制得的丝胶蛋白膜拉伸断裂强度和断裂伸长率较好。

The silk gland is one of silkworm most important organs, Usually, the silk gland is thought to be one kind of ideal model system which product sole protein, Therefore, this kind of cell raise in vitro will be helpful to research biosynthesis mechanism of sericin and the sericin.

丝腺是家蚕最重要的器官之一，通常认为丝腺是生产单一蛋白的一种理想模型系统，所以，这种细胞的体外培养将有助于研究丝素和丝胶的生物合成机制。

A Noiseless Patient Spider A NOISELESS, patient spider, I mark'd, where, on a little promontory, it stood, isolated; Mark'd how, to explore the vacant, vast surrounding, It launch'd forth filament, filament, filament, out of itself; Ever unreeling them--ever tirelessly speeding them.

一只沉默而耐心的蜘蛛一只沉默而耐心的蜘蛛，我注意它孤立地站在小小的海岬上。注意它怎样勘测周围的茫茫空虚，它射出了丝，丝，丝，从它自己之小，不断地从纱绽放丝，不倦地加快速率。

The corrosion behavior of the microwires in aqueous HF solution and melting NaOH were investigated respectively,and the anti-corrosion property of glass-coated pure copper microwires in strongly acid and strongly alkali were analyzed with the corrosion mechanism being discussed.

采用熔融纺丝法制备了玻璃包覆纯铜微丝，对微丝表面玻璃包覆层的去除进行了实验研究，评价了微丝在氢氟酸和熔融氢氧化钠中的腐蚀行为，分析了玻璃包覆纯铜微丝在强酸和强碱中的耐腐蚀性能，探讨了其腐蚀机理。

To improve the quality of Ta Spinnerets with high hardness and alkali-proof corrosion,HFCVD is used to deposit crystalline diamond films with different sizes of grain on carbonized Ta spinneret s.

为改善钽喷丝头的品质，提高其硬度和耐碱腐蚀能力，利用热丝CVD制备不同粒径的金刚石薄膜，并通过对钽衬底的碳化处理，成功使之沉积于纯钽喷丝头表面，对纯钽喷丝头进行表面强化。

To improve the quality of Ta Spinnerets with high hardness and alkali-proof corrosion, HFCVD is used to deposit crystalline diamond films with different sizes of grain on carbonized Ta spinnerets.

为改善钽喷丝头的品质，提高其硬度和耐碱腐蚀能力，利用热丝CVD制备不同粒径的金刚石薄膜，并通过对钽衬底的碳化处理，成功使之沉积于纯钽喷丝头表面，对纯钽喷丝头进行表面强化。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。