RBI HYDRAULIC BREAKER USER MANUAL. 2. How the Tool Breaks Rock. The following paragraphs describe what happens to break rock when the piston strikes the tool. (A)Contact-Initial Compression Stress Wave. When the piston (1) strikes the top of the tool (2), it sends a compressive stress wave (3) down to the.
And Counter means counter, exactly as in English. Poise means weight. So the word literally means counterweight and that is what a counterpoise is in an antenna system, where it was originally used. Simply put, a ground plane that the antenna system could mirror itself in.
Antennae (singular: antenna) in biology have historically been paired appendages used for sensing in arthropods. More recently, the term has also been applied to cilium structures present in most cell types of eukaryotes. In arthropods, antennae are connected to the front-most segments.In crustaceans, they are biramous and present on the first two segments of the head, with the smaller pair known as antennules. All other arthropod groups â except chelicerates and proturans, which have none â have a single, uniramous pair of antennae.n the groups with more uniform antennae (for example: millipedes), all segments are called antennomeres. Some groups have a simple or variously modified apical or subapical bristle called an arista (this may be especially well-developed in various Diptera).