可选择的

The locking mechanism is configured to permit selective angular positioning of the head relative to the handle on the pivot axis and is operable between an adjusting mode in which the head is angularly positionable relative to the handle and a locking mode in which the head is locked in an angular orientation relative to the handle.

锁定机构的构形做成容许选择在枢轴线上头相对于柄的角度定位，并且可在头可相对于柄改变角度位置的调节模式和头锁定在相对于柄的角度位置上的锁定模式之间工作。

ASCENDENT office chairs series have multiple configuration options, dealers may be based on market demand and user requirements with its own design, an appropriate adjustment of product configuration can be set up so that the same shape of the product without affecting its performance under the premise of the use of lower product prices, so that Products more market competitiveness, but also increase the allocation to meet the quality requirements for products with higher consumption levels, such as selection of multi-function devices institutions.

ASCENDENT办公椅系列产品具备多重配置选择，经销商可根据市场需求和用户要求自行搭配设计，适当调整产品组建的配置可以使同一外形的产品在不影响其使用性能的前提下降低产品的价格，使产品更具市场竞争力，同时也可增加配置以满足对产品品质要求较高的消费层面，如选用多功能的机构装置。

An advanced branch and bound method which reduces the computer resolving time enormously and leads the reliability research of large-scale spatial frame structural systems close to practical use is presented on condition that the same computation accuracy is ensured.

导出了大型空间刚架结构系统某梁元断面达到塑性屈服极限时的修正刚度矩阵和相应的等效节点力向量；提出了在保证同等计算精度的条件下，可成倍地减少运算时间的改进分枝限界方法，使大型空间刚架结构系统的可靠性研究向实用化迈进；本文开发出可自动生成失效衡准，自动选择主要失效形式，追踪失效过程的计算机程序。

We find good ways to hydrolyze and modify by experiments. Through the experiment, good tanning, retanning and filling properties, as well as, better chrome exhaustion are found in the modified products, with the help of selecting suitable ways to hydrolyze and modify the chrome shavings. The crust leather is possessed of fullness, softness, good dyestuff...

通过实验研究，选择适宜的水解铬革屑的方法和改性条件，发现改性产品在应用中具有较好的鞣制复鞣填充作用，可促进对铬的吸收，坯革丰满、柔软、有弹性，粒纹清晰细致；对染料吸收性好、着色均匀；并可提高成革的收缩温度，降低废液中的含铬量

The result is important from both theoretical and engineering viewpoints because of its generality and constructiveness, so that from it we can chose many kinds of decoupling control law which can meet many other requirements such as stability and robustness for the closed-loop system.

此结果之所以在理论上，特别在工程上是重要的，在于它的构造性和一般性，因为它可扩大解耦控制律的选择范围，可使闭环系统在解耦的同时，更容易找到满足其它一些要求的解耦控制律，如稳定性、鲁棒性等。

METHODS: Volunteers with movable partial denture were adhered plastic slabs on the base plate to acquire 1h, 4h, 24h dental plaque biofilm, then confocal laser scanning microscopy was used to observe the structure.

选择安装有局部可摘义齿的志愿者在基托表面粘贴塑料片的方法，在塑料片上可获得1、4、24h牙菌斑生物膜，并用激光共聚焦扫描显微镜进行结构的观察和分析。

Series automatically paste machine, is currently domestic update generation transport type paper paste gum equipment, this machine provide stable capability, simple operation, quick speed produce, use heat dissolves gum powder, thus avoiding white gum shrinkage and mildewed, can also increase finished product degree of hardness, transform and fold is not easily, can paste document nip, photograph volum, top grade pack envelop, and can produce diversification gift box, the moon cake box, refinement box, rigidity box etc, deluxe paper product, it is ideal choice for large, medium and small scaled packing line.

自动上糊机，是目前国内最新一代输送型纸张上面上胶设备。此机性能稳定，操作简便，生产速度快。使用热溶胶粉，从而避开白胶缩水和发霉问题，也可以增加成品的硬度，不易变形打折。可糊合文件夹、相册、精装书封面，并可生产多表化的礼品盒，月饼盒，精品盒，硬盒等高级纸制品。是大、中小型包装行业流水线作业的理想选择。

Since first introducing the L3 kit back in 2005 (known then as the M3 Line Kit) we have received many enhancement requests for the L3 from the Audiophile community including Extension Kits for the selector switch, optional Stereo and mono stepped attenuators, transformer options, different price points etc.

自从第一次介绍了三级包在2005年（当时已知的M3货币供应线包）我们已经收到了许多增强的要求的三级从高保真社会包括扩展套件选择开关，可选立体声及单声道的阶梯衰减器，变压器的选择，不同的价格等

Choose different collocations according to various installation environment and use requirements of lift tables to receive better effect.

根据升降台的安装环境和使用要求，选择不同的可选配置，可取得更好的使用效果。

The company's products varieties Qi, has all kinds of SOLAS Convention in line with the 96 amendments to the rules of international life saving appliances and MSC resolution MSC. 81 (70) life-saving equipment required to run tests inflatable life raft type cast may be suspended-type inflatable life raft, inflatable life raft open, since Fuzheng inflatable liferaft, since the centralizer can render type inflatable life raft, etc. various types of products, and CCS, EC, BV, DNV, ABS, NK, such as ship and community certificates, in particular, is the company's own design and manufacture of access to national patent 3-20 m offshore evacuation systems×èfill the domestic blank, and further demonstrates the remarkable strength of the Company,úlicense life-saving equipment is the best choice for you!

本公司产品品种齐，有各类符合SOLAS公约96修正案，国际救生设备规则及海安会决议MSC.81(70)救生设备试验要求的跑投式气胀救生筏，可吊式气胀救生筏，开敞式气胀救生筏，自扶正气胀救生筏，自扶正可吊式气胀救生筏等各类产品，并获得CCS，EC，BV，DNV，ABS，NK等船及社证书，尤其是本公司自行设计制造获得国家专利的3到20米气阻式海上撤离系统填补国内空白，进一步体现了本公司令人瞩目的实力，游龙牌救生设备是您最佳选择！

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