pin retention

The part of a tool or machine that presses against and maintains a firm hold on a working surface.

固定点，卡紧工具或机器上紧压工作面保持固定的部分

Rather, the coefficient ratios between certain basis function are kept fixed at predetermined value.

更确切地说：一定基函数之间的系数的比值保持固定在预定值。

With the helicopter hovering Tail-In pull back cyclic, and work the collective to complete at least two (2) full back tumbles while maintaining a constant altitude and heading.

机尾朝向操控者保持停悬，将升降舵拉升舵使直升机保持固定的高度及方向，向后翻滚至少二圈。

With the helicopter hovering Nose-In pull back cyclic, and work the collective to complete at least two (2) full back tumbles while maintaining a constant altitude and heading.

机头朝向操控者保持停悬，将升降舵拉升舵使直升机保持固定的高度及方向，向后翻滚至少二圈。

3. Maintaining appropriate growth in fixed assets investment and readjusting and optimizing the investment structure.

（三）保持固定资产投资规模适度增长，调整和优化投资结构。

The investment in fixed assets kept growing.

固定资产投资保持增长

the act of assuming or maintaining a seated position.

假定或保持一个固定的位置。

Secure cylinders at all times while in use.

使用时要一直保持钢瓶固定。

The Balls may be loosely restrained and separated by means of a retainer or cage.

用保持架松动地把各球分隔开并固定其位置。

1Installing of rappel/abseil anchors should be kept to a minimum.

1下降固定点之设置应保持在最低数量。

Any of several devices that serve to support or secure, such as a metal block that supports and holds railroad track in position.

支轴一种用来支撑和固定的装置，如支持和固定路轨保持原位的金属块

It is generally assumed that plumes maintain a relatively constant position as the plates move.

当板块移动时，一般假定地幔羽保持相对固定的位置。

Never attempt to lift a cylinder by its cap. Secure cylinders at all times while in use.

禁止试图提着钢瓶帽举起钢瓶。使用时要一直保持钢瓶固定。

It is a force called gravity that holds them in their paths.

是一种叫引力的力量使它们保持在固定的轨道上。

a plane curve generated by one point moving at a constant distance from a fixed point.

一个点同一个固定的点保持相等的距离来移动所产生的平面曲线。

Maintaining the necessary level of investment from treasury bonds to stimulate a relatively rapid growth of fixed-asset investment.

保持国债投资的必要规模，带动固定资产投资较快增长。

Seat the post into the canal gently and maintain firm pressure once the post is seated.

轻轻的使桩在根管内就位，一旦桩就位，应保持压力使之牢固稳定。

Fixed costs are those that remain unchanged irrespective of the level of output in the short term within a relevant range.

固定成本是指在相关范围内,不论业务量多少而保持不变的成本。