In terms of size, 55mm is stronger than 45mm. The larger the diameter of a material, the stronger it tends to be. This is because a larger diameter allows for more material to distribute and withstand forces, making it less likely to bend or break compared to a smaller diameter. Therefore, if comparing the strength of two materials based solely on their diameter, 55mm would be stronger than 45mm. **

Retailers purchase goods from suppliers or wholesalers in a variety of ways. They may place orders directly with suppliers, either through a sales representative or by using online ordering systems. Some retailers also attend trade shows or visit showrooms to view and purchase products. Additionally, retailers may use a combination of methods, such as buying from multiple suppliers to diversify their product offerings. Ultimately, the purchasing process for retailers involves evaluating products, negotiating prices, and placing orders to replenish their inventory. **

Rotary engines, also known as Wankel engines, are a type of internal combustion engine that operates on a unique rotary design. Unlike traditional piston engines, rotary engines use a triangular rotor that spins within a chamber to produce power. This design allows for a smoother and more compact engine with fewer moving parts, resulting in high power output for its size. Rotary engines are known for their high-revving nature and have been used in various applications, including sports cars and aircraft. **

Rotary engines have both advantages and disadvantages. On the positive side, they are known for their high power-to-weight ratio and smooth operation. However, they also have a reputation for being less fuel efficient and more prone to high oil consumption and emissions. Additionally, they can be more difficult and expensive to maintain and repair compared to traditional piston engines. Ultimately, whether a rotary engine is "bad" depends on the specific needs and preferences of the user. **

"Tire clearance 45mm short 53mm long" refers to the amount of space available between the tire and the frame of a bicycle. The measurement of 45mm short indicates the minimum distance between the tire and the frame, while 53mm long indicates the maximum distance. This information is important for determining the maximum tire size that can be accommodated by the frame without causing interference or rubbing issues. **

Typical margins for retailers can vary widely depending on the industry and the specific products being sold. However, a common range for retail margins is between 20-50%. For example, grocery stores may have lower margins around 20-25%, while luxury goods retailers may have higher margins around 50%. Ultimately, the margins for retailers are influenced by factors such as competition, pricing strategies, and the cost of goods sold. **

The most stable dowel for a 45mm screw would be a hardwood dowel, such as oak or maple. Hardwood dowels are strong and dense, providing a secure anchor for the screw. Additionally, hardwood dowels are less likely to split or break under the pressure of the screw, making them a reliable choice for stability. It is important to ensure that the dowel is properly sized to fit the screw and the hole it will be inserted into for maximum stability. **

A rotary harrow is a farm implement used for breaking up and smoothing soil before planting. It consists of multiple sets of rotating tines or blades that work the soil, breaking up clumps and creating a fine seedbed. Rotary harrows are commonly used in agriculture to prepare the soil for planting crops such as grains, vegetables, and grass. They can be attached to tractors and come in various sizes and configurations to suit different types of soil and farming practices. **