The phrase "attached to the upper" is correct and can be used in written English.
It is typically used to describe something that is physically connected or fixed to the upper part of something else. Example: The new design of the shoe has a strap attached to the upper for added support. In this example, the strap is connected to the upper part of the shoe to provide extra support for the foot.
Two piezoelectric layers are attached to the upper and lower surfaces of moderately thick FG substrate.
The blaring sound of the Clash's Should I Stay or Should I Go crashed out of speakers precariously attached to the upper deck of Ukip's open-top bus.
The eye-shaped generator consists of a rectangular ceramic and two elastic body plates that are attached to the upper and lower surfaces of the ceramic.
Prepreg surface layers were then attached to the upper and lower surfaces of these wrapped cylinders and the entire structure cured in a hot press.
The window included a clock with the legend "Time to check your neck for thyroid cancer" and, in a Dali-esque touch, rows of mannequin heads with clock hands attached to the upper parts of their necks.
Repeated measures one-way analysis of variance was performed and showed a significant drop from 273.3 (control, no stimulation) to 215.8 deg/s (21%) when small electrodes were attached to the upper 1/4 position.
The output of accelerometers attached to the upper body has provided useful insights into the motor control of normal walking, age-related differences in dynamic postural control, and gait patterns in people with movement disorders.
Composite wing impact monitoring was performed using multiplexed FBG sensors attached to the upper surface of the wing and a high speed interrogator was used to sample the impact response signals at a frequency of 100 kHz.
Flash glucose monitoring devices involve a sensor, about the size of a £2 coin, that is attached to the upper arm and constantly measures the level of glucose in the fluid around cells in the body, rather than in the blood, by means of fibres that sit under the skin.
Still, although the trend in primate evolution is toward a dethronement of the primacy of the sense of smell, there are still some good snouts to be seen in those lower primates that retain a naked moist rhinarium attached to the upper lip.
It is also observed that droplets generated near the hydrophilic sidewall can be attached to the upper corner of the channel walls, which prevents the liquid water from covering the GDL surface, whereas the hydrophobic sidewall may cause clogging of the gas channel with liquid water at a low airflow rate.
