锁环

It locks the frequency of the carrier-wave at 35MHz.The stabilization of the carrier-wave can be 4×10-5,the accuracy can be 3×10-5.The frequency modulation and the confection of the carrier-wave are realized by the capacity-changing diode V149 and the integration voltage-control oscillator MC1648 chip.The end power amplifier uses the audion 2SC1970 to make it work in the third magnifying state,it improves the efficiency of the magnifier and the power of the output reaches the design demand.

发射部分采用锁相环式频率合成器技术， MC145152和MC12022芯片组成锁相环，将载波频率精确锁定在35MHz，输出载波的稳定度达到4×10-5，准确度达到3×10-5，由变容二极管V149和集成压控振荡器芯片MC1648实现对载波的调频调制；末级功放选用三极管2SC1970，使其工作在丙类放大状态，提高了放大器的效率，输出功率达到设计要求。

The main products the company has: Hinge 、Casting Container、Locking Gear、Door Locks、Plug、Fitting Hook、Door Seal、Aluminum Profile、 Profile、Meal Hook、Fixation、Track、Cargo Bar、Support Plate、Chuck、Pull Ring、Tache、Buckle、Hook、Pulley、STTMR、Spring catch、Centeral wedge、Buffer block、Rubber lock、Euphroe 、Rope hook、Spiling、Plate、Flashboard、Mudguard、Fender、Military shelter lock、Military step-ladder、Military shelter corner casting、Guardrail、Tarpaulin、Parts for tarpaulin、Electricity Cabinet lock、Air leg、Gas springs、Rubber rolls、Solid tired wheel、Jacks and parts for tow. We also welcome special orders made according to clients' drawings or samples as well.

公司主要产品有：铰链、合页、栏板颌、侧门铰链、集装箱箱角、钢琴铰链、长排铰链、门锁、后门锁、厢式车后门锁、盒锁、工具箱锁、插销、门风钩、门阻、门搭钩、窗封条、门封条、铝型材、包角、厢式车包边、铝围框、肉钩、轨道、固定架、护板、撑杆、撑头、撑板、卡头、卧环、地板钩、拉环、搭扣、带扣、带钩、钩子、滑轮、拉紧器、卡紧器、搭锁、弹簧销、减震块、缓锁器、缓冲块、橡胶块、紧绳器、绳钩、板钩、插桩、钢压板、插板、挡泥板、挡泥罩、军用三岔锁、军用踏梯、军用方舱角件、护栏、漏水器、篷布、软篷系列配件、电柜门锁、气动杆、气弹簧、胶轮、实心轮、千斤顶等拖车配件，并可承接来样，来图加工订做产品。

The passive mode-locking using Kerr effect has been re-ported.Its mechanism is that the Kerr lens effect of gain medi-um causes the mode-locking.The experiments show that self-starting and unidirection operation can be accomplished in aring cavity.

利用Kerr非线性进行被动锁模实验已有报导，锁模的机制是由增益介质自Kerr透镜效应引起的，实验证明采用环型腔进行自锁模可实现自启动单向锁模输出。

First of all, the history of phase locked technology and the actuality of researches on it are introduced. Then, beginning with the fundamental principles of a phase-locked system, we build the mathematical model based on the architecture of the traditional analog PLL, and afterwards investigate some of its characters such as tracking, acquisition, noising, and stability. The system parameters are developed at the same time, and some universal conclusions on the theoretical analysis of PLL are reached.

论文首先对锁相技术的发展历史和研究现状做了简单介绍，然后从锁相系统的基本工作原理引入，以传统模拟锁相环的结构为基础，分析了锁相环的数学模型，并以此为出发点对锁相环的跟踪性能、捕获性能、噪声性能以及稳定性等各种性能进行了深入的分析，对环路的各项参数指标进行了详细的推导，得出了锁相环数理分析的普遍结论。

The main products the company has: Hinge 、Casting Container、Locking Gear、Door Locks、Plug、Fitting Hook、Door Seal、Aluminum Profile、 Profile、Meal Hook、Fixation、Track、Cargo Bar、Support Plate、Chuck、Pull Ring、Tache、Buckle、Hook、Pulley、STTMR、Spring catch、Centeral wedge、Buffer block、Rubber lock、Euphroe 、Rope hook、Spiling、Plate、Flashboard、Mudguard、Fender、Military shelter lock、Military step-ladder、Military shelter corner casting、Guardrail、Tarpaulin、Parts for tarpaulin、Electricity Cabinet lock、Air leg、Gas springs、Rubber rolls、Solid tired wheel、Jacks and parts for tow. We also welcome special orders made according to clients' drawings or samples as well.

公司主要产品有：铰链、合页、栏板颌、侧门铰链、集装箱箱角、钢琴铰链、长排铰链、门锁、后门锁、厢式车后门锁、盒锁、工具箱锁、插销、门风钩、门阻、门搭钩、窗封条、门封条、铝型材、包角、厢式车包边、铝围框、肉钩、轨道、固定架、护板、撑杆、撑头、撑板、卡头、卧环、地板钩、拉环、搭扣、带扣、带钩、钩子、滑轮、拉紧器、卡紧器、搭锁、弹簧销、减震块、缓锁器、缓冲块、橡胶块、紧绳器、绳钩、板钩、插桩、钢压板、插板、挡泥板、挡泥罩、三岔锁、踏梯、方舱角件、护栏、漏水器、篷布、软篷系列配件、电柜门锁、气动杆、气弹簧、胶轮、实心轮、千斤顶等拖车配件，并可承接来样，来图加工订做产品。

In this scheme, four PLLs are set in the condition of relay for frequency output.The frequency transform time is greatly compressed by the alternate work of four PLLs in comparison with the hop time for frequency transformation of a single PPL.

在本方案中，运用了四个锁相环进行接力式的频率输出，通过四个锁相环的交替工作，使得频率输出改变的时间较之通过单个锁相环改变锁相频率的跳频时间获得了大幅度的压缩。

Internal locking ring preents disassembly in this design.

该设计中的内锁环使之不可拆卸。

The seat, disc and pivot pins are combined into one subassembly secured to the inlet side of the body with a locking ring in sizes 3 and smaller.

阀座，阀瓣和枢轴销构成一个分总成，采用尺寸3英寸或更小的锁环固定在阀体进口一侧。

The article introduces a kind of new quick opening blind flange structure which adopting self-energizing seal way and connecting by lock rings.

叙述一种采用自紧密封方式的，由锁环连接的新型快开盲板结构。

Another prevention method was through elaborate locking rings which made meters non-removable, except with special keys.

另一个预防措施就是安装精制的锁环，使仪表非得用特备的钥匙才能移动。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。