Care is needed when loading the roll to prevent twisting or kinking the film...装胶卷时要小心，别使胶片扭结。Describes the static calibration methods of accelerometer: gravitational attraction method, loading method and centrifuge meth...
Calcium is excreted in the urine and stools.钙通过尿液和粪便排出体外。If you don't make your choice in time, you are likely to fall between two stools.如果你不及时作出决定, 就会两头落空.Joanna was pouring the drink. While she was thus engaged, ...