可保持的

Control of Low Flow Rates/Tight Shutoff- Micro-Flute and Micro-Form valve plugs provide superb rangeability in high-pressure, low-flow applications, while maintaining tight shutoff.

在低流速控制/紧堵-微长笛和微表阀插头提供了良好的可调换范围在高压力，低流量的应用，同时保持紧密关断。

An improvement on the die casting technology of aluminium hub includes drilling hole at the position of die, where the function of die is not affected, for preventing gas from coming into molten aluminium, mounting safety valve to the exhaust opening of die casting case for keeping proper pressure to save electricity and shorten die casting time, and increasing the water-flowing area of cooling disk or ring for higher cooling effect.

一在不影响模具本身功能部位钻孔增加排气通道，解决了压铸过程中产生的气体进入铝水问题。可使铝轮减少气孔。在压铸机箱体排气口部位，安装安全阀，能使压铸机箱体内保持适当的压力，工作时少进气、少排气，起到节电不堵浇口，缩短压铸时间，提高产量。冷却盘、冷却环改进后，增加了过水面积，提高了冷却效果。

Enzymes can not onlykeep original traits after being immobilized but can be separated easily from reactants and resultants as well.

而酶的固定化后除了保持原有的特点外，易与反应物和产物分离，可回收重复使用，降低生产成本。

The IR results indicate that the surface of these phosphide catalysts is partiallysulfided while the structure of the phosphides is retained under HDS reactionconditions.

CO 探针的红外光谱表明，在HDS 反应过程中，磷化物催化剂的体相结构可基本保持，但催化剂表面被部分硫化，形成了MoP_xS_y或NiP_xS_y活性相。

They can also get exercise by playing in the garden, but they should be kept in well-fenced backyards as they love to explore and wander.

他们也可行使打在花园里，但是他们应该保持良好的栅栏的后院，因为他们喜欢探索和漂移。

Second, the section modulus of the stem can be changed in seeral ways to allow greater flexibility while leaing the implant diameter unchanged so that stability is not compromised.

其次，有多种方法可改变柄的截面模量，以在不改变假体直径的基础上增加其柔韧性，并且保持其稳定性。

What else can Rotary districts and Rotary leaders do to ensure the continued viability and success of this important Youth program?

扶轮地区及扶轮领导人还可做哪些其他的事情，以确保此一重要的青少年计画保持活力及继续成功？

They will learn how to create an eco-friendly society and maintain the sustainable development of human beings.

他们将学会如何创造一个生态良好的社会环境，保持人类的可持续发展。

One of his main worries is that Cisco does not have sufficiently replicable processes in place to keep things on track.

他的主要担忧之一就是思科的可复制过程并未充分到位，无法保持所有事务正常运作。

The Cruise Control Systemcan keep constant speed of vehicle set by the driver without controlling accel pedal.

车辆自动巡航即指当车辆在高速公路上行驶时，驾驶员即使不踏加速踏板，车辆仍可按驾驶员所希望的车速自动保持行驶的功能。

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。