measurev.衡量;测量;量度为…;估量; ofprep. 关于;属于…的;由…制成; howadv.怎样;健康状况如何;到何种地步;以任何方式; aart. (用于可数名词或单数名词前,表示未曾提到的)一(人、事、物);用于前有形容词或后有短语的不可数名词前;一(个);每一(个);任一(个); 相关例句 1、 The volume of g...
With no demand on the system, except leakage, bring the system up to its normal operating pressure (P1, in psig). Select a second pressure (P2, about half the value of P1) and measure the time (T, in minutes) it takes for the system to drop to P2. Leakage (cfm free air) = [...
1. Measure and Cut the Pipe(s) Gluing PVC pipe together starts with knowing how to cut PVC pipe. You’ll want to ensure that each length of pipe sits fully in its fittings. For accurate sizing, measure the distance between shoulders on the fittings at each end of your pipe. Transfer t...
1.PVC pipe:Use PVC pipe for cold water, irrigation, main gas lines and drain-waste vents. PVC can become brittle with sun exposure. It’s available in 10-foot and 20-foot lengths that range from 1/2- to 6-inch diameters. Connect lengths for longer stretches with primer and solvent cem...
Measure and cut replacement pipe: If you decide to replace the PVC pipe, measure the length needed and ensure you have a replacement pipe of the correct size and type. Use a pipe cutter or saw to cut the replacement pipe to the appropriate length. Prepare the pipe and fittings: Prior to...
1. Use casserole to transfer acid from tank to sample bottle. 2. Measure 1.0 ml of nitric acid solution into a 250-ml flask containing 100 to 150 ml of a good grade of water (drinking water will suffice) and a few drops of the phenolphthalein indicator. 3. Swirl flask and add sodium...
Many PVC fittings are slightly tapered and won’t allow you, in most cases, to fully seat “dry” pipe. We’ll explain this in detail when we get into how to glue PVC. The take-away is to use the tape measure to calculate the depth of the fitting. 1. Cut The PVC The most ...
If you are going to have a design on your garment, you need to decide where it should be placed. You will also need to consider or discuss with your potential manufacturer various garment printing methods and types to choose what is best for your design and garment type. Measure the plac...
Soft soldering is a technique used to join wires, fix electronic components onto circuit boards and bond copper pipes together. This tutorial shows you how to solder step by step.
Measure the distance between the two elbows, add 2 inches for overlap and transfer the measurements to the flue pipe. Cut the pipe to the appropriate length with sheet-metal shears. Fasten the flue pipe and fittings together with sheet-metal screws. Use three screws per joint. ...