behavior of lubricant
1Homosexuality — Sexual orientation Orientations Asexual · Bisexual · Heterosexual · Homosexual …
2List of sexology topics — This is a list of topics related to sexology, human sexuality and marriage customs, and related topics such as human sexual anatomy, reproductive biology, andrology, gynaecology, obstetrics and, where relevant, anthropology. Note that this list… …
3Ceramic matrix composite — Fracture surface of a fiber reinforced ceramic composed of SiC fibers and SiC matrix. The fiber pull out mechanism shown is the key to CMC properties …
4Plain bearing — Crankshaft plain bearing shells A plain bearing, also known as a plane bearing[1] or a friction bearing[2] is the simplest type of bearing, comprising just a bearing surface and no rolling elem …
5Safe sex — is sexual activity engaged in by people who have taken precautions to protect themselves against sexually transmitted diseases (STDs) such as AIDS.[1] It is also referred to as safer sex or protected sex, while unsafe or unprotected sex i …
6Lesbian — This article is about the sexual orientation. For other uses, see Lesbian (disambiguation) …
7Refractory metals — are a class of metals that are extraordinarily resistant to heat and wear. Refractory metals are said to be poorly resistant to oxidation and corrosion. [UFL EMA 6625: Advanced Metal Processing, Summer 2008, Lecture 09] These properties make them …
8Masturbation — Onanism redirects here. For the Biblical origin of the term onanism , see Onan. Gustav Klimt s Woman seated with thighs apart (1916) …
9Anal sex — This article is about the human sexual act. For anal sex in non human animals, see Animal sexual behaviour. Depiction of anal sex on 510 BC Attic red figure …
10Boron nitride — IUPAC name Boron nitride Identifiers …
